The island where one woman reigned as a "queen" over 30-odd Japanese soldiers who refused to believe that WWII had ended.

Fifty years of contamination in Scotland's waters.

Sulphuric gases inhabit a beautiful Japanese island.

The pits used to load the nuclear bombs onto the aircraft that dropped them over Hiroshima and Nagasaki at the end of World War II.

The ruins of an ancient island city built atop a coral reef in the South Pacific are spectacular and strange enough to have inspired H.P. Lovecraft.

Largest Kauri tree in New Zealand.

About 80% of all U.S. avocados are descendants of Rudolph Hass's glorious tree.

A century-old magnolia tree is the only living landmark tree in New York City.

A surprising and unconventional mosque hidden in the subsoil of Istanbul.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

This subterranean funicular is one of the world's smallest subways.

Red frames showcase remnants of one of New York's original subway stations.

A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

This Mexico City subway station will make you feel like you've been transported to the London Underground.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

An underground world of gorgeous, palatial metro stations designed as a nuclear shelter complex.

The longest trolleybus route in the world, from Simferopol and Yalta.

Designed by famed 20th-century architect Cass Gilbert, the future of this abandoned 1908 rail station is currently in limbo.

One of America's largest retail chains got its start in one of its most remote rural destinations.

At 207 feet, one of the world's longest continuous escalators.

Four miles of pipelines form the model of still-functioning retro-tech efficiency.

On this island, you suck away your garbage via an elaborate pneumatic tube system.

One of the last functioning antique elevators in Chicago.