As a folly, it could be seen from the back of Castletown some 4 kilometres (2.5 miles) away and it is built exactly perpendicular to the centre of the house.

[citation needed] Designed by Richard Castle,[3] it is 42 metres (140 feet) high and is composed of several arches, adorned by stone pineapples and eagles, topped by a massive obelisk pillar.

[5] The folly, on its 5 acres of woodland, was acquired by the IGS in 1968 thanks to American donor Rose Saul Zalles.

[7] The site, which is designated as a "national monument in state ownership",[2] is now in the care of the Office of Public Works (OPW).

The OPW has erected modern fencing to protect the structure by preventing direct public access.