The Hudson River School comes alive at this palatial estate.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

Small island science organization offers public the chance to participate in research.

An eccentric inventor's castle home with its own indoor weather system.

Water and windows define this defensive Italian well.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The Vermont square that inspired Shirley Jackson's "The Lottery."

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

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

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

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

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

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

The mansion home of author Edith Wharton.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

The original Uncle Sam was actually a New York meatpacker who is buried under this historic grave.

This fairy tale-themed amusement park is now abandoned, and childhood metaphors abound.

The Connecticut village named for its subterranean thunder.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

A large camera obscura, constructed entirely from digitally fabricated components.

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