Oddly touching memorial to a little-remembered nuclear tragedy.

First point in the Struve Geodetic Arc, a 19th century undertaking to measure the Earth's size and shape.

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

Launch site for nuclear war against Western Europe.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

The atomic museum in the basement of this German castle displays long strands of replica uranium cubes.

Every color in the rainbow awaits.

Legend holds eating just one of these black eggs can add seven years to one's life.

Enormous underground chamber built to detect 'ghost particles' of the universe.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

The largest volcanic caldera in Japan holds an entire city in its maw.

Historical Japanese-Dutch relations are honored with haunted rides and flower fields in this replica town.

Abandoned Japanese ghost town gives a glimpse into what our own metropolises may leave behind.

Plot your trip through the city on the sidewalk.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.