This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

This Costa Rican topiary park is a surreal garden of unearthly delights.

Ancient site of Mongolian Shamanism located near a road leading out of Ulaanbaatar.

Ride the subways of yesteryear.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

This grand gothic brewery has been pumping out suds for over a hundred years.

This quiet, unassuming spot in Budapest was the birthplace of the bloody 1956 Hungarian Revolution.

The amazing wonder cabinets of a very rich Austrian archbishop.

The history of Reykjavik told through a historical village and live actors.

A sculpture dedicated to this town’s rich shipbuilding heritage.

This house was once the location of Frelinghuysen University.

This nine-story building is the oldest standing skyscraper in D.C.

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.