An architect in Aspen used psychedelics as his muse while building this mushroom masterpiece.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

A collection of over 15,000 zines works to preserve DIY publishing culture.

According to the experts at the Guinness World's Record office, this is the longest candy counter in the world.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

Maine's oldest diner also happens to win acclaim for its elevated comfort food.

Stumps of an Ice Age forest, visible only at low tide.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

Shelves covered in dozens of coffee bean varieties fill this North End institution.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

The massive machine creates cracking displays of indoor lightning.

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

Trash escaped from a landfill to fill beaches with all kinds of treasure.

This small shop walked so America could run on Dunkin'.

Hidden among the trees at the Rangeley Lakes Trails Center are more than 20 gnomes in small wooden houses.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

Rock face that shares a name with Mary Shelley's famous doctor.