Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

Whimsical artist house in the New Jersey woods.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

One of 100 “Whaling Wall" murals painted in 13 different countries by a renowned marine life artist.

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

The early 20th-century home features cutting-edge technology of the day, such as ammonia refrigeration and needle showers.

Near the summit of Mount Washington, a stone monument remembers a life lost to one of the mountain's infamous storms.

A real-life hidden Easter Egg in New Hampshire's capital city

One of the earliest—and most commonly forgotten—acts of rebellion against English rule.

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

A quiet spot commemorating two naturalists who had to choose between love and the university at which they both taught.

A stretch of New Hampshire lake water is the only ice runway in the lower 48 states that is FAA-approved.

Believed by many to be the oldest surviving public monument in the United States.

An unrecognized nation-state created in the 1820s to avoid taxes.

This small-town library was the first in the world to be entirely supported by taxation.

Not one, but two of Frank Lloyd Wright's architectural masterpieces nestled on the same street.

The 92-foot-tall structure is based on the aircraft that carried the first Americans into space.

A gravestone marks where a man's lost limb was laid to rest.

This modern medieval weapon of war was built to toss pumpkins.

A recreated sign from the movie Jumanji has become a makeshift tribute to the film's late star.

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

This location of a Mexican chain restaurant has a unique location: an old jail.

Final resting places of a husband and wife who became famous for their claims of extraterrestrial abduction.