A living memorial to the trees London lost during the Great Storm of 1987.

Rebuilt remains of a temple to Roman god Mithras.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

A mysterious shape catches the eye in this 16th-century painting.

This one has sailed five times as far as Sir Francis Drake's famous ship.

A friendly pub with a sordid past in cock fighting.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

This ancient Egyptian obelisk still bears the wounds of World War I.

This peeling mural of Adam and Eve was inspired by the greenhouses at Kew Gardens.

Once a train station along the Great Eastern Railway this vibrant coffee shop and bar is where members of London’s creative class mingle.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

An architectural oddity hides in plain sight on this iconic London bridge.

The Tudor-style cottage in the middle of the square is not quite what it seems.

This restaurant offers the original California cuisine.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

Catacombs turned marketplace.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The television series' iconic giant foot was borrowed from this classical painting.

Dictionary Johnson’s favorite feline.