Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

Outsider Art Community.

A bizarre roadside attraction and the first instance of miniature golf in the world.

One man's homage to the orange as realized through a long-term folk art labor of love.

This mysterious series of teeny guerrilla installations sheds a whimsical light on street art in Oakland.

This (occupied) house is 10 feet wide and full of spite.

An outsider art duo's yard has been turned into a whimsical public gallery.

Wonderland replication in progress by one persistent man.

America's most famous piece of self-built architecture.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

An unreal vintage shop that wears its dadaist influence on its zombie fish.

Iceland: home to volcanoes, waterfalls and, apparently, Santa?

One of the world's largest ice festivals dazzles visitors for over a month with radiant sculptures and carvings.

Norway's chilly all ice-instrument festival.

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

A small chapel celebrating the spiritual bond between dogs and humans.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

The world's only and thus largest collection of its kind celebrates everyday wonder through simple umbrella sheaths.

The world's largest rotating world.

This tiny patch of arid sand sits in one of the greenest states in the United States.

The highest point in Maine is a grand gift to the state citizens that also happens to be one end of the Appalachian Trail.

Sculptures, jams, and the wild west collide at this folksy retreat.

Largest institutional collection of tomb figures from Western Mexico in the United States.