Ye Olde Mitre

You will walk past the entrance at least once. Ye Olde Mitre is down an alley off Ely Court between Hatton Garden and Ely Place, and the signage does not go out of its way to help you. The original pub was built in 1546 as servants' quarters for the Bishop of Ely's palace. The current building dates from 1773, a year after the palace was demolished. Inside the bar there's a cherry tree stump that supposedly marks the boundary between the Bishop's land and Sir Christopher Hatton's — Elizabeth I allegedly danced around the tree itself, though that story improves with every retelling. The whole site was technically part of Cambridgeshire until the 1960s, which is the kind of jurisdictional quirk only London produces.