This once-booming gold mining hub was basically abandoned overnight.

One of the most remote spots in America and the first protected wilderness area in Nevada, named after an old legend.

The long, arduous journey of the stones of the Abbey of New Clairvaux.

This macabre monument atop an ancient well gives a nod to a brutal episode in Scottish clan history.

A preserved oasis with traditional Andalusian-style architecture and beautiful views of the Nile.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

A remote desert lookout offers unparalleled views of the California badlands for those who brave the trek.

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

The highest point in Washington state is a volcano covered in glaciers.

One of the most unusual geological features, recognizable from a dozen hit movies.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

This elaborate towering structure was once famed for its revolutionary height.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

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

This church in Pittsburgh is home to the largest collection of religious relics in North America.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

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

Dr Barnes' $25 billion private collection of art and arboretum.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

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