This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

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

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

Roman ruins top white travertine terraces formed by ancient hot springs.

A marvel of Byzantine engineering under the streets of Istanbul.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

In 1988, jazz legend Chet Baker fell to his death from a window of this hotel facing Amsterdam Centraal.

This vast collection of smoking pipes from across the world spans centuries.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

Museum preserving torture methods from the past.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

Some say this medieval church is where the poet Dante married his wife and also met the love of his life.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Evidence from a brutal 1880s murder is on display at this former infirmary house.

An office built to look like a giant basket.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

The world's largest collection of the world's largest objects is in one small Illinois town.

Community bookshelf of 25-foot-tall book spines.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”