An artist's cute bronze subway sculptures belie his violent artistic past.

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

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

Elevated freight railway turned wildly successful urban park.

Nassau Hall has served as army barracks, a museum, and played a key role in the American Revolution.

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

The only working large-scale tea plantation in the United States.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

One of the oldest living oak trees in the Southeast.

Former villa and estate of James Deering developed to preserve native tropical forests.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

Home to items never before seen by the public.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

A museum dedicated to exhibiting remarkable outsider art.

This free, take-a-book shop seems like a trick but isn't.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A tunnel with windows, so you don't miss out on the impressive views.