Once called Winthrop Park in 1889, home to a decidedly sexy tribute to the Monitor vs. Merrimac battle.

Site of the first pathological and bacteriological research facility in the United States.

A crumbling hospital from the 1850s on Roosevelt Island.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

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

This rail trail culminates in a three-mile land bridge only accessible to cyclists and pedestrians.

This pop-culture shop also offers the chance to become part of their favorite tv show or movie.

The largest outdoor art gallery in the Northwest United States.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

A floating cat sanctuary on an Amsterdam canal.

One of the first monuments dedicated to the accomplishments of the great Vice Admiral, Horatio Nelson.

A warning against "the demon drink" adorns the northwest entrance of Glasgow Green.

This colorful mosaic remembers one of Britain's most deadly peacetime fires.

Ruins battered by centuries of war and disaster offer a wondrous glimpse of medieval Ireland.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

In the middle of a Brussels roundabout, a cargo container balancing on its edge.

Museum precariously perched on a massive yellow pillar.

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

This nondescript coffee shop conceals one of the wildest patisseries in New York City.

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

The last remaining vestige of a popular 1999 public art display.

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

This fairy-tale, neo-Gothic church in the Azores is a world of magical realism.

The vast, legendary catacombs hold secrets much stranger than stacked bones.