This bookstore serves recipes from the cookbooks on sale.

A relic from one of London's worst 19th-century slums.

The site of London’s first coffee house has been serving refreshments of one kind or another for 360 years.

These Victorian era devil sculptures were designed to spite a local vicar.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

The Great Fire of London and the regulation of one-way streets both started in this alley.

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

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

The commemorative stone column conceals a secret laboratory.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A Roman spa buried deep beneath the City of London.

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A memorial for public executions that dates back to the 14th century.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

A mysterious suspended hand greets unsuspecting visitors at the Tower of London.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The bronze uniforms commemorate the vital role of women during World War II.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

A former major munitions plant that has been converted into a sprawling art space.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.