A fountain standing as a testament to a doomed alliance.

Ancient serpentine sacrifice holder that has stood the test of time.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

This unassuming building produced some of the world's most famous bells.

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

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

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

This lush area was the site of extensive enemy bombing during WWII.

Visit on a Sunday morning to see some killer tricks.

Buried for centuries, this hidden cellar is all that remains of London's medieval Whitefriars Monastery.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

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

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

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

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

A unique tribute to the millions of animals who served and died for the British military.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.