This secluded walkway overlooks a magnificently wild London green space.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

The final resting place for the famed creator and narrator of "The Twilight Zone."

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

This mysterious Sardinian festival sees a horde of blank-faced equestrians compete for tin stars.

This cliff-face port is considered a masterpiece of mining engineering.

Not one, but two of Frank Lloyd Wright's architectural masterpieces nestled on the same street.

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.