The first ever diner included on the National Register of Historic Places is famous for its custard French toast.

Part of a highway network meant to connect Miami to Montreal, this 10-mile stretch of road made from red bricks is still around 100 years later.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

The ruins of a 2,000-year-old Roman fishing village perched on one of the best beaches in Spain.

A monolith stands at the site of the most significant battle ever fought on British soil.

A missing Roman legion was recreated in sculpture along a Scottish cycling route.

A hidden slot canyon in the southern Nevada desert makes an unexpected oasis and scenic hike.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A series of caves, tunnels, and wells filled with fascinating figures and symbols.

A tunnel with windows, so you don't miss out on the impressive views.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

The Kalamazoo factory has 100 years of instrument-making, and one big wartime secret.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

The hallucinogenic center of the ancient world.

A remnant of the Roman army's presence on the coast of Scotland.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

World-famous, Pink's still manages to keep its prized cult fetish status.

For roadside fast food, pull over at the giant orange.

The only thing better than tubing down New Jersey's scenic Delaware River is doing so while eating a hot dog from a giant floating stand.

At 22 feet tall, these Bronze Age monoliths are some of the tallest standing stones in the United Kingdom.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.