Where does the ceremony of Keys take place?

The Ceremony of Keys takes place at the Tower of London, a historic castle located on the north bank of the River Thames in central London. This ancient ceremony, which has been held for centuries, involves the locking of the Tower gates and is a symbolic event that signifies the Tower's security. It is typically performed every evening at 9:53 PM, attended by invited guests and the Yeoman Warders, also known as Beefeaters.