The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

This research center for rare prosimians is studying how they sleep to help prolong human life.

One of the few surviving original NASCAR dirt-track speedways.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Beer lover's can-covered house.