Self-sufficient greenhouse floating on the Hudson River.

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

The LSU mascot lived on the college campus in one of the most impressive tiger habitats in the country.

This "second" cemetery represents New Orleans' attempt to keep cholera at bay.

Storyville was New Orleans' historic red light district and hotbed of jazz music, sometimes referred to simply as "The District."

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Check out the underground party scene at the "Burning Man of Brooklyn."

The most confusing clock in New York.

Red frames showcase remnants of one of New York's original subway stations.

There must be a pun in this haystack somewhere...

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

The mummified relics of an American missionary.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The first pet cemetery in the United States.