These buildings are a poignant reminder of the thousands of horses and mules who passed through this area of the Shenandoah Valley on their way to war.

This sprawling farm was once a Cold War-era hideaway for the nation's top diplomats.

This homestead was occupied by Union soldiers, who believed the owners were signaling Confederate forces.

The well-preserved remnants of a bridge that once made up a WW1-era military railroad.

A New England ghost town features a trail of boulders etched with intriguing life lessons.

The most photographed house in Maine looks good enough to eat.

The grave of Mary Nasson is shrouded by witchy legends.

According to legend, Bob Dylan sneaks in twice a year to eat dinner with Jack.

A cooled lava flow from the Haleakalā volcano formed these surreal-looking columnar basalt structures.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

This legendary urban waterfall creates a dazzling display of rainbows.

This black shoreline is made up of exploded lava particles.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

These ancient sacred grounds granted amnesty to those who managed to reach them.

A priest with no formal artistic training used basic house paint to create gorgeous religious scenes inside this historic church.

An ode to one of the first concerts broadcast via satellite.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

Grave of the man allegedly responsible for a series of infamous murders in Boston in the 1960s.