These pretty kitties killed and ate as many as 135 railway workers.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

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

Hidden in the New Mexico desert southeast of Roswell, nine small deep lakes formed inside sinkholes.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

Legends surround this jagged rock formation in the New Mexico desert.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The site of the gruesome massacre—and maybe cannibalism—of five men, a tragedy that made Alferd Packer infamous.

The remnants of the base where US Army troops learned how to fight in extreme conditions.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

A downtown park built on top of unclaimed graves.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

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

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

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

Climb and walk into the crater of one of the youngest volcanoes on Earth.

Climb through the life of a Mexican hero as you ascend a 130-foot statue.

One of Mexico's rare urban natural parks features waterfalls and a working fish farm.

This church, buried halfway in lava rock, is all that remains of a Mexican village destroyed by a volcano.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

This historic street in Quito is known for its seven stone crosses—and one presidential assassination.