This toll gate house on Marine Drive, Port Soderick, stands at the site once known simply as "Tollgate," one of the four main stops on the cliff-top Marine Drive tramway that opened in 1896 and ran between Douglas Head and Port Soderick. The Douglas Head Marine Drive Company, which owned the scenic clifftop roadway, originally charged a toll of a penny per passenger plus a share of takings from traffic passing this point, making the gate house a working part of Victorian Douglas's tourist infrastructure. The tramway itself closed after the Second World War and was largely dismantled by 1955, but this building survives as a relic of that era.

Named for Albert's Mount tower.

The Tower of Refuge stands on St Mary's Rock (Conister Rock), a reef in the middle of Douglas Bay, and was built in 1832 at the instigation of Sir William Hillary, founder of the RNLI's forerunner organisation, who had personally taken part in several rescues of sailors wrecked on the rock, most dramatically the loss of the RMS St George there in November 1830. The rock had belonged to the Quane family until Attorney General John Quane presented it to Hillary so that a refuge could be built for the crews of vessels wrecked there. Designed by the architect John Welch and built for £255 (£181 raised by public subscription, the balance covered by Hillary himself), the structure consists of three linked castellated towers and remains a landmark of Douglas Bay to this day.

Trafalgar House on South Quay, at the corner with Fort Anne Road, was for many years a well-known public house, the Trafalgar Hotel, before its conversion into a single dwelling. Records of its history as a hotel or the origin of its name could not be independently verified beyond its known former use as licensed premises, so this entry is kept brief.

This bank building stands on Castletown's Market Square. No verifiable history specific to a TSB Bank tenancy at this address could be confirmed; available sources describe the neighbouring registered banking building on the square (associated with Barclays) in detail, but attributing that history to this separate TSB address would risk conflating two different buildings on the same small square.

Glencrutchery Road. 1985/86 complex replacing 1926 original.

Tulloch House, at 2 The Parade, is a mid-terraced Registered Building within Castletown's Conservation Area. A local history account records that the house was occupied over the years by various families, including the Darrah family and a retired parson named Davidson, whose son wrote a novel called "The Green Hills by the Sea" set in Castletown. More recently, in 2019 the Island's planning register recorded Registered Building consent for the front elevation to be re-rendered using traditional materials such as lime render, matching its status as a protected historic property.

The Legislative Buildings on Bucks Road, home to the Isle of Man's parliament, were built in 1855 to a Neoclassical design by architect John Robinson, originally as a bank. After the collapse of the City of Glasgow Bank in October 1878 left the building vacant, Tynwald acquired it in December 1879, installing the House of Keys chamber in the former banking hall on the ground floor and the Legislative Council in a first-floor room. Tynwald later commissioned an additional new building immediately to the northwest of the original. As the meeting place of Tynwald, the world's oldest continuous parliament, the complex remains the seat of the Isle of Man's government, with its Bucks Road entrance giving access to the public galleries on sitting days.

Open-air assembly mound at St John's, from which the laws of the Isle of Man are proclaimed. The hill stands in the Vale of St John, where the old road running north from Castletown crosses the road from Douglas to Peel. Slieau Whallian rises steeply to 978 feet on the south side of the valley. The Manx name is Cronk-y-Keeillown, the hill of St John's church, and the chapel of St John stands beside the mound. A description printed in 1860 gives the dimensions: a grass-covered truncated cone about twelve feet high, 240 feet in circumference at the base and twenty-one at the summit, its slope cut into three circular terraces reached by a flight of wide steps on the eastern side, towards the chapel. The tradition recorded in the Manx Society volumes is that the mound was built of earth brought from every parish in the Island. Promulgation from the hill is the reason it survived. A bill which had passed the Governor, Council and Keys was transmitted to the Lord Proprietor, who could reject it or give a general or qualified assent. When it came back approved, the Governor ordered a court on the Tynwald Hill, where the Act was read out in English and in Manx before the Governor, Council and Keys, and was then signed in St John's Chapel. Only at that point did it bind the inhabitants. The Duke of Atholl's assent of 5 June 1738, signed at Dunkeld, ordered the Act to be published and proclaimed on the Tynwald Hill according to ancient form and custom, and it was proclaimed at the Tynwald Court held on 24 June that year. The Act of Settlement and the Ecclesiastical Constitutions were proclaimed there on 6 June 1704. The ceremony carried its own escort. Four horsemen from every parish, chosen from the most substantial inhabitants and led by the captain of the parish, attended yearly to bring the Governor and his officers to the hill on 5 July. The pathway from the chapel to the mound was strewn with green rushes. The hill was also where sovereigns were proclaimed. William IV was proclaimed there on 5 July 1830, which one Manx Society editor records as the first known occasion of a sovereign being proclaimed at the place, and Victoria on 5 July 1837. Antiquarian attention followed. Captain Grose drew the hill and made a plan of the ground in 1774, and his drawing was later used by the Rev. James Douglas in Nenia Britannica. About 1847, when the road at the west end of the mount was widened, a quadrangular stone cist was found, one of several burials recorded in the surrounding fields. The 1417 assembly is less securely attested than it is often stated to be. Sacheverell and later writers record that Sir John Stanley, on his first visit that year, gathered the worthiest of the land to hear the Deemsters declare the ancient law, and promulgated it from the hill. The editor of Manx Society volume III rejected this, holding that there is no historical evidence for it and a high probability against it.

Union Mills is simply the residential village on the A1 between Douglas and Glen Vine that the course runs straight through, its several curves following the line of the village streets. There is no TT-specific incident or naming story attached to the point beyond the village itself.

Union Mills is a village in the parish of Braddan on the road between Douglas and Peel, recorded as early as 1511 under the name 'Mullin Doway' (the mill on the black ford). Its present name derives from the combination of a corn mill and a cloth mill added in 1807 by William Kelly, trading as 'Flail and Fleece United', a firm that even issued its own five-shilling promissory notes. The Dalrymple Maitland Memorial Hall in the village commemorates 2nd Lieutenant John Dalrymple Maitland, killed at Ypres in 1916, the son of Dalrymple Maitland, Speaker of the House of Keys 1909-1919.

The Upper Lighthouse is one of a pair of lighthouses built in 1818 on the Calf of Man, the small island off the Isle of Man's south-western tip, under the Isle of Man and Calf of Man Lighthouses Act 1815. It was designed by the noted Scottish lighthouse engineer Robert Stevenson to warn shipping of the Chicken Rock reef lying off the Calf's southern end. Together with its twin, the Lower Lighthouse, it guided mariners for over half a century until 1875, when both were superseded by a single new lighthouse built directly on Chicken Rock itself, better placed to warn ships in foggy conditions. The two early Calf lighthouses have been disused as navigational aids ever since, though they survive as among the oldest lighthouse structures associated with the Isle of Man.

Venice is a historic maritime city in north-eastern Italy. Its connection to the Isle of Man relates to the broader European trading networks in which Manx merchants participated during the early modern period.

The Victoria Clock Tower on Mines Road, Foxdale, stands 40 feet tall and was built by the Isle of Man Mining Company, which by the late nineteenth century had consolidated control of the area's many lead, zinc and silver workings. It was designed by mine engineer John Nicholls and formally dedicated on 16 May 1901, an occasion of great civic pride for the mining village. The tower remains Foxdale's most recognisable landmark, a lasting monument to the mining industry that shaped the village before the mines closed in 1911.

Village House on Main Road, Foxdale, is a registered building in the former lead-mining village of Foxdale, which grew up around the mines worked by the Isle of Man Mining Company until their closure in 1911. No further verifiable historical detail specific to this house was found.

English colony in North America whose tobacco trade was affected indirectly by the eighteenth-century running trade through the Isle of Man. A memorial from the merchants and shipowners of Whitehaven described a formerly substantial trade with Virginia, Maryland and other American colonies. British manufactures were exported across the Atlantic and tobacco and other colonial produce returned through Whitehaven. The memorial argued that this commerce had declined because of the growth of smuggling from Mann. Manx tobacco manufactories imported leaf, processed it on the Island and supplied Irish markets clandestinely, reducing the profitable Whitehaven trade in colonial tobacco. The complaint formed part of the wider campaign against the Manx running trade during the 1750s. The merchants claimed that Mann’s position within a short sail of the coasts of Britain and Ireland made it particularly effective as a depot for highly taxed foreign and colonial goods. The connection with Virginia was therefore commercial rather than administrative: Virginia tobacco moved within an Atlantic trading system in which Whitehaven merchants considered Manx manufacture and smuggling a direct threat to their lawful trade.

Wales entered directly into Manx political history during the crisis of 1651, when Parliamentary authorities feared coordinated Royalist risings around the Irish Sea. Intelligence reaching the Council of State described a plot involving supporters in Cheshire, Lancashire and North Wales. Mann was still controlled by James Stanley, Earl of Derby, and the government feared that troops from the Island might land in Lancashire or North Wales to support the rising. Vessels were therefore sent towards Mann to prevent a landing. Colonel Robert Blake was appointed to command a squadron of twelve ships intended for the Isle of Man and the Irish Sea, while other naval commanders were ordered to keep watch on the Island. The Council also instructed Justice Mackworth in Montgomeryshire to coordinate with militia commissioners and military commanders in North Wales. He was specifically warned that Royalist plans included the possibility of forces arriving from Mann and was told to maintain communication with the Governor of Anglesey. The surviving records show North Wales and Mann being treated as connected parts of the same Irish Sea security problem immediately before the Parliamentary conquest of the Island.

Washington D.C. is the capital of the United States. The city has had Manx residents, including Wilson Jenkinson, a Foxdale miner who moved from Montana to work in United States government services and was active in promoting the North American Manx Association.

This is a registered building known as the Watch House Switch Room on the Red Pier in Douglas Harbour, an area with a long history as a berth for Isle of Man Steam Packet Company vessels. No further verifiable historical detail specific to this structure could be confirmed.

The stone-built water tower at Ballasalla railway station dates from 1902 and remains in working use today, historically supplying water for the steam locomotives of the Isle of Man Railway. For four decades, from 1979 to 2019, the station's name was displayed in lettering on its tank, periodically removed and reapplied during maintenance. It was added to the Isle of Man's Protected Buildings register around 2019 in recognition of its historical importance.

Ballure Reservoir, 1859/1884.

Welch House, on Church Road in the heart of Onchan village, looks from the outside like a small chapel but was in fact built as an infants' school. It stands at the centre of Onchan's conservation area and was placed on the Protected Buildings Register on 11 September 1989. It has since been converted into private accommodation.

The Wesleyan Chapel at Earystane, Colby, is registered simply as a chapel. Methodism has deep roots in this part of the island: John Wesley himself is recorded preaching nearby at Balladoole in 1781, and Colby saw its first resident Methodist preacher arrive in 1822, with local chapel building following through the nineteenth century. No detail specific to this particular chapel's construction date or congregation could be confirmed online, so this broader local context is offered only as background.

District of London containing the principal institutions of the British Parliament and central government. For Manx history Westminster appears principally as the place where disputes concerning the Island reached the Crown, Privy Council and Parliament. William Christian attempted to appeal from Mann to the King and Council after his conviction for treason. A petition recorded in January 1663 asked that he be tried according to the laws of England, noting that he had lived there for many years and possessed property in Lancashire as well as in the Isle of Man. The Attorney-General reported that he might be brought before the Council and his offence pardoned. Christian had already been shot at Hango Hill on 2 January. A royal order was subsequently sent to the Earl of Derby stating that Christian was to be brought up to be heard before the King and Council. The order arrived too late to prevent the execution. The evidence pack contains many later Westminster references, but a large proportion are low-precision matches or material relating to the Statute of Westminster rather than the place itself. Only the directly Manx material has therefore been used here.

Westminster House at 7 Parliament Square is, according to William Henry Cooper's local history, the sole survivor of a pair of properties once owned by H. E. Gelling, who used it as his office; its companion building was demolished in the 1970s. It stands on Parliament Square, the former seat of the House of Keys and heart of old Castletown.