An outstanding and haunting glimpse of the horrors of the Great Famine of Ireland.

This single room has survived the centuries with almost no deterioration.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

It might look like just a pile of sticks—because it is. But there's a dark history to how this stack got its start.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Started as a kitchen garden, now the second largest botanical garden in the world.

Try not to get slimed in Tribeca.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

This dam in the woods, built by Henry Ford with only manpower and oxen, holds no water and serves no purpose.

Step into a pastel time capsule where candy is truly dandy.

A trek through the solar system here on earth.

A monument dedicated to the unrecognized Black "mother" of modern medicine.

These are probably the most beautifully-crafted toilets you've ever seen.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

A short boardwalk through a swamp leads to the spot from which the Louisiana Purchase was surveyed.

An anonymous art project beneath Longfellow Bridge where hundreds of trophies line the steel support beams.

The penultimate and final resting places of British General Edward Braddock—minus a few bits and pieces.

A memorial to Chinese freedom in the city where American freedom was born.

The fictional birthplace of the Chief Engineer aboard the Starship Enterprise.

A reproduction of a giant humanoid "fossil," a hoax buried locally for construction crews to find and gain national attention.

A gift from Scotland to the United States in memory of the 270 lives lost when Pan Am Flight 103 exploded over Lockerbie due to a terrorist bombing.

Home to an eclectic collection of over 200 vintage motorcycles, Americana, and some of the most extraordinary antiques from all around the world.