It would take 35 firetrucks to fill this enormous glacial pothole.

A mere dot on the map in the great north woods is the first place in America to vote in Presidential elections.

The Old Man of the Mountain’s less-famous, but still beloved little brother is said to resemble a leader of the Abenaki tribe.

The oldest covered railroad bridge still standing in the United States.

Generations of rockhounds got their start at this beloved, historic mine.

A beautiful Gilded Age hotel in the White Mountains with surprising diplomatic history.

A serene plaza that commemorates one of the Granite State's most iconic figures.

This small, unassuming, nursery plays hosts to some unique plant life.

The largest self-built castle in the U.S., six decades in the making.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This 19th century jail was mainly used to incarcerate the drunk and disorderly.

The highest bridge in America was built for an almost unnervingly small amount of money.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

London's smallest police station is barely the size of a phone booth.

Eighty million natural history specimens call this gargantuan museum home.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

A giant telephone commemorates the last "crank" call ever made in the U.S.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.