A huge work of Burning Man-inspired outsider art on the grounds of a California winery.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

This museum offers an actual time machine back through Colorado's past.

One of the oldest art supply stores in the United States.

At night, this glittering musical tunnel draws skaters and photographers.

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

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

A technicolor place of worship for Elevationists.

Two pillars set 10 paces apart commemorate the "last notable American duel."

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

Oddly enough, a pair of Wolfs funded the construction of this Little Red Riding Hood sculpture.

Housed in an old church, this hunting museum holds a collection of mythical bird-rabbit creatures.

A diminutive plaque recalls the treetop sniper who almost killed Abe Lincoln.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

An obscure federal monument honors the French diplomat who served as Ambassador to the U.S. during WWI.

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

The longest continuously operating Elk's Lodge in the country.

Early prototype for Frank Lloyd Wright's Guggenheim.

One man's personal kunstkammer, museum and shop.

A stairway to heaven, or to nowhere at all.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

A famous flea market artist's studio that's full of odds and ends.

A 1920s home transformed into an immersive art experience, where every room is a portal to another realm.

A luxurious doomsday bunker hidden beneath an unassuming Las Vegas home offers the best of subterranean suburbia.