The largest self-built castle in the U.S., six decades in the making.

This naturally-sourced hot spring is now home to a clothing-optional resort.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

This gallery is home to everything from antiques, to ancient tribal masks.

This drive-by, rotating mini-gallery is nestled in the suburbs of Colorado.

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

A home covered with elaborate mosaic and other pieces of art.

Railroad came. People came. Railroad left. Town died.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

A phallic shrine to a princess goddess in Krabi, Thailand.

A forsaken beachfront condo abandoned after the Boxing Day Tsunami.

Cities of the world and famous Thai monuments in minature.

Riding on a pair of architectural dragons, this Thailand temple holds murals full of lurid imagery.

This small patch of land is the final resting for these communication relics of the past.

Gruesome statues of people reborn in Buddhist hell stand among the ruins of an 11th-century sanctuary.

Its tremendous toad is actually a five-story museum and viewing platform.

Abandoned mini-mansions that were once intended for affluent Bangkok families now sit empty.

Bizarre Hindu and Buddhist sculpture park.

The cursed island of black pebbles.

Time-frozen department store of dangerous and dusty relics.

From dragonfruit to mangoes to durian this Thailand resort allows guests to stay inside all manner of giant fruit.

You can walk up Thailand’s naturally non-slip waterfall.

This museum has a most unusual location: inside a giant, three-headed elephant.

Vintage furniture and art share space with all manner of collectibles at this quirky shop in Bangkok.