This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

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

A chance to follow in the footsteps of the word's most legendary animator.

The world's only known button museum.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

This whimsical fountain pays tribute to Toronto's four-legged friends.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

Get up close and personal with these majestic fish.

Internationally known record store and purveyor of "dusties."

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

A technicolor place of worship for Elevationists.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

In this quiet park a rendition of a classic painting graces the outside of a charming restroom.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

An exhibit of items from the mental institution where Mary Todd Lincoln lived after her son conspired to have her committed.

Statue dedicated to the star of an old television show.

This quirky museum has a collection of more than 15,000 bobblehead dolls.

A group of artists transformed this desolate city alleyway into an outdoor gallery of street art.

Try not to get slimed in Tribeca.