For decades, it has disappeared and reappeared as water levels rise and fall.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

Abandoned Nazi train station turned underground astroparticle laboratory.

A lush oasis full of vibrant plants and striking geometric displays.

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

Legend has it the lovelorn tears of a princess and a shepherd boy formed the blue and green twin lakes in the Azores archipelago.

On the cliffs of São Jorge in the Azores stand the remains of a lighthouse that was struck by a series of earthquakes.

The Hanshin Expressway goes right through its 5th, 6th, and 7th floors.

Various accidents and illnesses fell upon the developers who tried to remove these historic trees.

The enigmatic symbol on this incineration plant's smokestack is, in fact, a one-of-a-kind clock.

The only Edo-period ferry that is still in operation in Tokyo today.

This park boasts a unusual collection of curious monuments from around the world, from Micronesia to Antarctica.

One of the best-preserved remains of "Tokyo's lost rivers."

Home to a collection of drums from around the world that allow visitors to play a tune.

A lonely chimpanzee lures you into a narrow alley leading to this hidden shrine.

Peer into this window for an interesting glimpse into the public utilities that make this city run.

A statue meant to celebrate peace has also been interpreted as a mother taking away her son's internet privileges.

Losing lottery tickets are deposited at this shrine in hopes of better luck.

A cursed torii gate still stands on the edge of Haneda Airport, decades after its shrine's relocation.

Tragic reminders of the 1945 firebombing campaign over Tokyo still haunt this bridge.

Although damaged beyond recognition, this stone god is still said to bring good luck to those who tap on him with a pebble.

A sad reminder of the World War II bombing stands largely unnoticed on a street corner.

The train engine is tucked under an apartment building on a quiet Tokyo street.