The only thing these street signs will help you navigate is your imagination.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

A bronze plaque marks the site of the only show the "King of the Soul Singers" ever missed.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

An underground wonderland in Iowa.

The oldest house in Galena, Illinois, now is a reminder of when this city was the world's lead mining capital.

After retiring, Gary Pendergrass turned his yard into a wonderland of outsider art.

The largest mural in the world painted by a single artist.

The first "Hut" was actually a small brick building.

Created by Catalan artist Joan Miró in 1978 and made up of 350,000 tiles, this mural is the only large-scale glass mosaic the artist ever created.

A mysterious and terrifying public art goblin seemingly meant to inspire local legend.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

This historic lavatory leftover features two levels of defecation stations completely without context.

Huge abstract sculptures of the Puerto Rican Flag.

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

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

Akureyri is home to an oversized can of one of Iceland's favourite beers.

A real-life homage to the Rachel McAdams and Will Ferrell's fictional Eurovision musical duo.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

This elegant arc of a waterfall marks a religious turning point.

A sulfuric martian landscape that looks far better than it smells.

In Northeastern Iceland lies something of an oxymoron: a steaming desert.

This natural rock formation features seemingly unnatural vertical ridges that have been blamed on elves.