A dark, narrow tunnel that leads to a charming lake and waterfall.

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

A life-sized statue commemorating the former manager of Ipswich's football team.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

This striking steel sculpture transforms environmental data into art.

A remarkable medieval structure born from a 14th-century disaster.

Covering 13 acres and hosting 3,000 shops, this is one of Africa's biggest urban markets.

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

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

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

This church carved into the rocks is full of enchanting stone statues.

This meticulously reconstructed early medieval settlement offers an immersive experience of daily life in an Anglo-Saxon community.

One of the best preserved Tudor public buildings in Britain was once used for witch trials.

The scene of the United Kingdom's most famous UFO incident, dubbed the "British Roswell."

A chaotic collection of coin-operated slot machines designed to delight and disturb in equal measure.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

This iconic high-rise residential block was one of the last to be built in the Brutalist style.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

An unusual round church in London with a Templar past.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Eighty million natural history specimens call this gargantuan museum home.