At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Curios, scientific antiques, oddities for sale.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

A downtown park built on top of unclaimed graves.

Homage to the local produce now serves as a car dealer.

One of the first big sculptures anywhere in Australia.

Come for the flowers, stay for the bats!

A battle between nature and architecture in the Cambodian jungle.

Sacred Buddhist home of some spiritual monkeys.

One of the largest Buddhist stupas in the world keeps an eye out in every direction.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Copenhagen's celebrated theme park and gardens.

The Guardian of Tallinn.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

An artist's mausoleum with a haunting echo.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

Medicinal spa created with the discharge from a geothermal energy plant.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

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

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

An encyclopedic collection of mammal penises.