Visit the Tower of London to experience a deep dive into British history. The Tower is steeped in legend and superstition, and is an architectural masterpiece. There, you can find the world's largest diamond, free tours from the magnificently dressed Yeoman Warders, a plethora of weaponry and armor, and a strong sense of ancient times. The Tower has served as a royal residence, treasury, mint, armory, and zoo throughout its vast history, and is best known as a prison where many royals and nobles were held captive and even killed. Here, you can find the Crown Jewels, including the Koh-i-Nur diamond and the Imperial State Crown. Don't forget to look out for the Tower's famous ravens, believed to be a sign of impending doom if they ever left. In addition, you can explore the White Tower, the Bloody Tower, the Chapel of St John the Evangelist, and the Tower Green scaffold, where beheadings took place. Allow half a day to take it all in.