Since the 1700s, this old barrel has acted as a post box that relies on the kindness of travelers.

Kenyan restaurant is a carnivore's paradise, serving exotic meats at its ultimate 'Beast of a Feast.'

This small group of sand dunes manages to pack in a strange rainbow of colors.

A secret climbing tree hides along the side of a Costa Rican road.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

Charnel house at the foot of Mount Sinai.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

Elevated freight railway turned wildly successful urban park.

A spiritual vortex among the red rocks in Sedona.

The oldest Dutch colonial stone house in New York City is a hidden gem on the border of Brooklyn and Queens.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

The gondolas let you glimpse a bird's-eye view of one of the world's highest capital cities.

This fairytale-like structure is the last turf church ever constructed in Iceland.

This black shoreline is made up of exploded lava particles.

This nine-story building can be played like an instrument.

A little-visited waterfall in an otherworldly landscape.

This picturesque abandoned home is rumored to be a spite house.

The massive machine creates cracking displays of indoor lightning.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

This modest post office sits on the site of H.H. Holmes' famous murder castle.