FDR's Art Deco hospital tower was hopelessly inefficient.

This blowhole is supposedly caused by a trapped monster.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

These unusual rooms on wheels are holdovers from the 1960s.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The romance of early commercial flight still fills this Art Deco destination.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

A small Richmond island dotted with the remnants of hundreds of years of history.

Legend has it the lovelorn tears of a princess and a shepherd boy formed the blue and green twin lakes in the Azores archipelago.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A sulfuric martian landscape that looks far better than it smells.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

This elegant arc of a waterfall marks a religious turning point.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

The most powerful waterfall in all of Europe.

The fifth-longest natural arch in the world, and the longest outside China.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Submerged lava formations create incredible waterworks.

The king of U.S. high points towers over every other peak on the continent.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.