The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

This natural marble cave is one of only five national monuments in Oregon.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

This picturesque stream was up until recently the site of a ten story mountain of slag and sewage.

These disused steel furnaces are now haunting ruins that may one day be a national park.

Behold the rickety wooden glory of the world's oldest operating roller coaster.

This dramatic rail curve was once the target of a failed Nazi attack.