The ruins of an unfinished explosives factory can be found while taking a gentle stroll through a Manx glen.

Mysterious chains and iron stakes adorn this strange grave, with no explanation.

The remains of the wrecked steam trawler can be found on the beach at low tide.

World's largest working waterwheel has been around for over 150 years.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Cairns built to bring travelers good luck stretch across the land like miniature stone mountains.

Three columns of volcanic rock shoot out of the ocean.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

An unusual monument to a 19th-century circus star.

Staves, storm-calling, and of course, necropants.

This monument to one of the largest science fiction games of all time bears the names of hundreds of thousands of players.

This tiny museum's sizable collection is jammed into a former underground public toilet.

The largest whale museum in Europe allows visitors to walk among life-size giants.

A winding, blood-red tunnel of hardened lava navigable by foot.

An encyclopedic collection of mammal penises.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

A building so large that it has its own weather.

A monument celebrating the idea of reaching inaccessible places.

Eighty million natural history specimens call this gargantuan museum home.

Northern Ireland's Brobdingnagian stepping stones.