A gothic church spire sits atop this skyscraper, the tallest church in the world.

An antiquated German apothecary on Chicago's North Side.

A science teacher's dream.

An enormous park-like oasis, full of famous Chicagoans' graves.

A lush green oasis in the middle of Chicago.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A speakeasy takes on Chicago's drinking culture.

This shop for all your super spy needs hides an educational secret.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A Mormon place of exile in Missouri.

A beloved, quirky little fountain featuring a large frog spitting water at a naked boy.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

A piece of John the Baptist in the American heartland.

These semi-natural waterfalls hint at the park's Victorian-era industrial past.

The largest of Denmark's seven mysterious round churches stands on an island in the Baltic Sea.

The historic bar where local ship captains, traders, and gold miners would come together to do business a century ago.

The construction of a new church near Venosa was started in the 11th century, but never finished.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

An ancient chamber filled with wonderful rock art and a Neolithic carving of a human face.

It took 28 years to build this massive statue of the Hindu god Vishnu riding a mythical bird.

Four abandoned towers hidden above the Douglas fir forest in Washington.

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.