White Tower (Tower of London)
United Kingdom
The 186th tallest tower in the world
The White Tower is a former royal residence, the old keep, at the Tower of London in England. It was built by William the Conqueror during the early 1080s, and subsequently extended. The White Tower was the castle's strongest point militarily, provided accommodation for the king and his representatives, and housed a chapel. Henry III ordered the tower whitewashed in 1240. Today the Tower of London is a museum and visitor attraction. The White Tower now houses the Royal Armouries collections.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).