With over 12,000 different species of plants, this botanical garden is Japan's oldest and most diverse.

Nine Gardens in one—with tea service.

Transport yourself to the 1980s era of video games at this themed restaurant and bar.

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

A 20-meter (65-foot) robot towers over Tokyo Bay.

Experience park where visitors are told to expect the unexpected.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

Obscured within a ring of trees, this abandoned World War II relic hides on a German hillside.

These abandoned Cold War-era bunkers are now a designated refuge for endangered bat species.

This lurid German fountain plots the sad course of marriage from dating to death.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.