The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

A haunting collection of the vanished and disappearing natural world.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

Old neon signs from the City of Brotherly Love provide a snapshot of the city’s evolution.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

The most confusing clock in New York.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

A terrific purveyor of natural history objects and curios.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The actor best known for slapstick comedy is memorialized in his home town.

This university transit system is a 1970's vision of the future.

In the parking lot of a fast food restaurant, a statue memorializing a prolific bull elephant.

Pennsylvania's own Roswell-style UFO mystery.

Swim or sail to this pie-slinging boat off the coast of St. Thomas.

Perfect your fly fishing technique on their practice ponds.

Home to one of the world’s largest collections of model yachts.

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

A modest reminder of treacherous waters at the Golden Gate.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

A 300-ship graveyard, with a few still visible at low tide.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.