Wainhouse Tower

Wainhouse Tower, sometimes called the "Tower of Spite", is a folly in the parish of King Cross, on the south-west side of Halifax, Calderdale, West Yorkshire, in England. At 275 feet (84 m), it is the tallest structure in Calderdale and the tallest folly in the world, and was erected between 1871 and 1875. The main shaft is octagonal in shape and has a square base and 369 steps leading to the first of two viewing platforms which is open to the public, and a total of 405 to the top viewing platform which is usually closed to the public. The tower is open to the public during bank holidays, and is a Grade II* listed building.

Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).