Prehistoric animals decorate this popular outdoor park.

Amazing taxidermy dioramas from the 1960s in a cement building meant to look like an ice cave.

Once one of the most polluted caves in America, now an environmental success story and a museum dedicated to caves.

The world's longest known cave system.

The only building in Louisville (hopefully) that contains two ancient holy skeletons.

Marine fossils from the Devonian period are exposed at this park.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

Enormous lake at the bottom of a unique cave system.

Before TV meteorologists, there were weather kiosks. This may be the last one in the United States.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

The site of Paul Revere's historic two lantern warning.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

The ruins of a medieval castle that once belonged to one of the most powerful families in the Netherlands.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

This former coal gasification plant found a curious second life as a popular public park.

Make your reservation to have coffee with some kitties.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

A wall of chewing gum moonlights as collective art.