An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

The last remnants of a lakeside airport that was bulldozed overnight by the mayor of Chicago.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

The 30,000-volume library is one of the world's most impressive poetry collections.

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

Illegal drag racing two stories beneath Chicago’s streets.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

The palatial McDonald's that inspired Wesley Willis.

A "haunted" landmark on the coast of Southern California.

Malibu's first beach home features an astonishing trove of ceramic tiles.

The real faces of Venice beach captured on Romanesque columns.

This beloved, whimsical weiner topped an eclectic variety of Los Angeles buildings, including a Thai restaurant and an advertising agency.

Stalinist skyscraper built with help of cryotechnology.

Dozens of padlock-trees along the Moscow River.

More than 700 species live within this murky marvel of a swamp on California's coast.

A New England-style lighthouse along California's beautiful Highway 1 gets a re-do.

A bomb shelter and some fireplaces are all that remain of the house Fred Roberts tried so hard to keep standing.

The stone walls of a home built to withstand a California wildfire still stand after more than a century.