Once called "the biggest room in the world," this Victorian-era hall is so large that it contains a smaller 1970s heptagonal theatre.

When the city of Manchester built a new centralized heating network, they did it with style.

Eat the ultimate iteration of Portugal's most beloved pastry.

Sip cherry liqueur at a bar dating back to 1840.

A bronze statue of a low three-legged seat commemorates a piece of furniture that started a riot.

Step back in time at this 19th-century kiosk.

Get in line for Lisbon’s most famous sandwich.

The world's longest continuously running show has played at this small West End theater since 1974.

Inside this building is another country within Rome, a sovereign entity without a physical territory.

Dedicated to the Father of the British Fire Service.

This third-generation institution is one of the last in London that still cures its own salt beef for epic sandwiches.

Soon after its unveiling, this giant inverted globe sparked controversy and was vandalized.

Small sculpted heads of prominent phrenologists mark the outside of their former headquarters.

This tidal island, a sacred site in early English Christianity, was the target of a notable Viking invasion.

A plaque commemorates a Victorian scientist's monumental discovery about waves.

Once used to protect important Roman trade routes.

Before becoming a poet John Keats studied here to become a surgeon.

This cannonball embedded in the side of an Edinburgh house once served a surprisingly pedestrian purpose.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

This 19th-century Turkish bath house survived the Blitz of London and is now an events venue.

This massive, 30-foot-tall statue of the famed Scottish knight overlooks a grassy knoll.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

A sculpture of a beloved local figure, who tipped his top hat to everyone he passed on the streets of Bratislava.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.