Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

An ancient necropolis of magnificent tombs.

Now a memorial to merchant sailors and Titanic victims, this medieval church was destroyed by bombing raids in 1940.

Discovered on a shipwreck after more than 400 years, this Renaissance ratter tells a very waggly tale.

Over a century old, this restored Victorian building is surrounded by a lush garden filled with rare palms.

This ruined medieval castle was the scene of Lord Robert Dudley’s seductive reception for Queen Elizabeth I.

Known as the "Stairway to Heaven," this historic canal dates back to the 1700s.

A unique flight of canal locks that owe their form to 19th-century cost-saving measures.

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

Chelsea's soldiers were given strict orders when crossing this historic bridge.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Ship-sized kinetic sculptural fantasy.

Its collection includes a broad array of social, geographic, graphic design, and political history.

A face-like natural rock formation so well known, a pub was named in its honor.

Soldiers carved these regimental badges into the chalk hills in remembrance of those who died in World War I.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

An enormous, inside-out glass globe built in 1935.

The massive machine creates cracking displays of indoor lightning.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

Soaring over the Niagara Whirlpool since 1916.