This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

The beloved home to all publications indie, erotic, and punky.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This small museum in a 17th-century building honors three iconic Scottish writers.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

One of the biggest markets in Asia, under one of the continent's largest domes.

This French colonial post office is arguably the grandest in all of Southeast Asia.

You can take a class, browse the library, or visit the lavish lair of an international men's humor society.

This library and museum is dedicated to the life and literature of the Indianapolis native author.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

This one-time health resort was used by aristocrats around the world.

A whimsical bridge adorned with decorative dragons.

Tiny communists hammer away on the Olomouc Astronomical Clock.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

A church of bones, decorated with 40,000 human skeletons.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Home of the Large Hadron Collider and the birthplace of the World Wide Web.

360° views of the city plus five floors of optical illusions and hands-on science.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.