The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

A marvel of Byzantine engineering under the streets of Istanbul.

The ancient latrines of the Greeks, in all their public glory.

It houses the remains of a 17th-century version of the Titanic.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

A Roman-style column in Oregon hides a spiral staircase inside.

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

A giant Troll lurks under one of Seattle's oldest bridges.

Copenhagen's celebrated theme park and gardens.

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

Ever-growing collection of devils in art.

A black cat protests the City Guild in Riga's Old Town.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

Oriental bazaar in the heart of Sarajevo.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Home to the deepest rift anywhere on Earth.

This museum glorifies the humble potato.

Sweet Willy, at 30 feet tall, is the world's biggest beagle.