Mysterious glowing orbs float through the desert night.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The strange phenomenon causing gravity to "work backwards" on this hill has been blamed on the paranormal.

A mysterious light in the wood, rumoured to be the the ghost of a railroad brakeman.

A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

These stained-glass windows are all that remains of a building that was the target of one of the biggest explosions in London after World War II.

A haunting—but not haunted—chapel remains in the woods.

This remote camping site offers incredible stargazing opportunities.

Vermont's hills are alive with the sound of music at this historic hotel.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

The ruins of this former mining boomtown once housed over 3,000 people. Now, the population is two.

This shrine is an ode to the region's rich Hispanic heritage.

Located in the world's highest-altitude Dark Sky Community, this observatory welcomes amateur and professional astronomers alike.

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

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

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

This parking garage was the site of what was - at the time - the largest cash robbery in history.

An underground river pushes more than 200 million gallons out of this Missouri spring every day.

The only mill in the state that features a covered bridge.

This cathedral's stained-glass patchwork of psychedelic colors and shapes was put in place long before the swinging 60s.

This small turbine mill along Rocky Creek was built in 1928

The deepest spring in Missouri.

A historic, scenic mill that was forced to close due to overlogging.