Mentioned by homestay.com
The Best Castles and Palaces to Visit in London
"This is one of the oldest fortresses in London, built after the Norman Conquest of England, to house the new royalty who had just moved into the country and needed a nice secure palace to live in. As such, it’s a highly defensible castle, with two defensive walls and a moat, so it feels very castle-like. It’s also the home to the English Crown Jewels and has played host to notable historical events, in particular, the executions of 112 people, including Anne Boleyn and Lady Jane Grey."