Nearly 40 miles and 1,000 years of limestone mines under Denmark.

The world's largest maze is a nature park with nearly 200 decision points.

Over 9,000 brains collected between 1945 and 1982 demonstrate the results of untreated mental illness.

This Danish art forest places loud works of contemporary art among the pensive silence of nature.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

An abandoned 17th-century baroque hunting lodge with a wonderfully strange architectural plan.

A magical world of elves and fairies tucked amongst the trees in Colombia.

Manchester's abandoned train depot lingers in a post-industrial purgatory.

Despite having a dome made of papier-mâché this tiny observatory has survived for over a century.

A tiny, hidden alleyway dedicated to the father of meteorology.

Hidden on the urban banks of a Manchester river are a series of abandoned waterside industrial sites.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

Black cat statues guard this temple-like Egyptian revival factory.

A breathtaking flower tunnel bursts with beautiful golden blossoms.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

This picturesque mansion has gone from opulent ruin to nature museum.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

The oldest building in Vancouver's Chinatown is now home to one of Canada’s largest contemporary art collections.

A high point in Vancouver kitsch.

Surprisingly Delicious Asian-Style Hot Dogs.