Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Resting place of the Texas A&M canine mascots, who watch the game from the grave with their own miniature scoreboard.

Campus tradition says couples who walk beneath this enormous oak will stay together forever.

Decades of discarded bottle caps line this alleyway, a fixture of Texas A&M.

Two gushing waterfalls of hot spring water within a block of each other.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

Once the smallest park in the national system.

A city park that sits on top of a freeway.

A park home to some unusually large rocks.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Three hundred years of preserved Spanish colonial history in San Antonio.

Water still flows through the oldest Spanish aqueduct in America.

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

The highest point in Texas is capped by a big silver pyramid.

Copenhagen's celebrated theme park and gardens.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

This strange statue features a bust of the famous composer plopped atop a woman's body.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

Baroque celebration of the end of the Great Plague of Vienna.

A mechanical clock built in 1914, with a rotation of 12 historical figures on its face.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

Once the home of a hermetic monk, this cave now houses a small church.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.