This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A hand-built folk art installation covered with messages of God's love.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

The site of Paul Revere's historic two lantern warning.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

"Try not to knock anything over!"

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The only structure left with direct ties to the Salem witchcraft trials of 1692.

An enormous, inside-out glass globe built in 1935.

A museum dedicated to the alleged Roswell Incident.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

"We Seceded Where Others Failed."

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

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Elevated freight railway turned wildly successful urban park.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

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

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

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

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

A celebration of capitalism in Midtown.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

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

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.