In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

The spot where Oxford garnered its name was also home to a medieval philosopher and includes a house covered in statues.

A 1950s beatnik coffee house, turned 60s counterculture hotspot, turned modern music venue.

This incredible viaduct was part of the Victorian railway boom and helped the Midland Railway navigate tough terrain.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

Also known as Rye Castle, this 13th-century fortification later became a prison and held one of Rye's most famous criminals.

This monumental gateway marks the northern edge of Brighton and is a welcome sign to all visitors to the seaside city.

This iconic Peak District ridge was once one of the busiest roads in medieval Britain.

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

Climb to the top of its spiral spire for spectacular views of Copenhagen.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Hans Christian Andersen for the postmodern world.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

This police call box harkens back to an era of pre-radio communications, and has a rather unique feature.

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

A 14th century castle built on the seat of a mighty giant.

Inside this store, a mysterious statue draws visitors from the world over.

This beloved roadside attraction welcomes visitors with his signature neon smile.

This open-air heritage museum illuminates centuries of historic English life from a West Sussex village.

A homage to the King at the hotel where he revived his career.

This ancient Egyptian obelisk still bears the wounds of World War I.