I’ll confess we saw some sights we wouldn’t have if we hadn’t gotten the London Pass before we left home. The Monument was one of these. We stumbled upon it in our trek from the Tower to St. Paul’s. It was built by Sir Christopher Wren between 1671 and 1677 to commemorate the Great Fire that decimated London in 1666, so it’s possible my characters could have visited it. It stood out from its surroundings more back then.
This is a sketch of the Monument in 1811 taken from the Monument web site here.
We climbed the 311 steps to the top, took some pictures, and climbed down—and got a certificate to mark our accomplishment.