An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

Obelisks and stone pineapples in the Irish countryside.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

Behemoth, cannon-like telescope operated by generations of Irish earls.

Abandoned medieval hill town.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

A small flooded ghost town with a few scattered structures remaining.

Mining town from the late 1890s, once home to Calamity Jane.

The ghost town that ended up on Ebay.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

Abandoned ship reimagined as a street art canvas.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

A strange house built only at night, with rumored mystic inspiration.

Where the line between entertainment and aerospace blurs.

Three buildings constructed of over 25,000 multicolored glass bottles.

Metal water storage tank turned ethereal concert hall.

The final resting place of a space program monolith.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

A giant gun barrel in Barbados that once hoped to shoot outer space with science.