This Cheshire museum has cuckoo clocks, a rare pipe organ and vintage motorbikes. But mostly cuckoo clocks.

A statue honoring Frank Sidebottom, a beloved cartoon figure from Timperley.

One of the last remnants of the Bessemer process that revolutionized steel production during the industrial age.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

A subterranean house of worship carved right out of the bedrock.

Thousands of abandoned statues of deities are taken to this hillside in southern Hong Kong.

This hulking behemoth is actually five interconnected towers built in the 1960s.

The original resting place of Queen Cleopatra and Mark Antony's only daughter.

Stone Age solar temple is aligned with the sun on each equinox and solstice.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

Aliens and monsters lurk inside this museum dedicated to one man's lifelong adoration of all things sci-fi.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

This beautiful example of Victorian engineering is the oldest water-balanced funicular anywhere in the world.

One of the last doorless, continuously moving elevators still in use in the U.K.

A subterranean playground in an abandoned slate mine.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Houses are tucked between, on, and underneath giant boulders.

Fabulous formations, weird and wonderful wildlife.

This expansive bridge in the Canadian wilderness was originally just built for friends.

An old world fairytale-land with over 350 fairy folk figurines hidden amongst 800 year old cedars.

This whimsical stacked cabin looks like something out of a children's book.

This series of rope-style bridges brings visitors into a jungle layer that is usually reserved for birds and monkeys.

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.