This once-derelict building is now one of the most beautiful bookstores in the world.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This poignant art installation raises awareness of violence against women.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

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.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The walls of the iconic dome are hollow and have a secret stairway.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

A downtown park built on top of unclaimed graves.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

The world-record holder for the longest bridge stretching continuously over water.

Huge abstract sculptures of the Puerto Rican Flag.

No one knows how many bodies are in this vault in a Chicago public park.

In a quiet north Chicago neighborhood rests a stunning relic of the golden age of earthenware design.

Illegal drag racing two stories beneath Chicago’s streets.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

A strange and haunting monument of unknown origin in the historic Graceland Cemetery.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.