This historic, palatial theater is now one of the world’s most beautiful bookstores.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

A natural history wunderkammer in the middle of the desert.

Elaborate tile work in this railway station tells the story of Portugal.

A hidden three-foot-wide house separates these two regal churches.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Home to items never before seen by the public.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

One of only two commuter aerial tramways in the United States.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Elevated freight railway turned wildly successful urban park.

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

The first American department store, and home to the largest operating musical instrument in the world.

The oldest surviving botanic garden in the United States.

A daily replay of the experiment that proved the rotation of the Earth.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

In the early 1800s, surgery was also a show.

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

Every week, a festive public jam session breaks out in downtown Asheville.

This rare basilica nestled right in downtown Asheville is an architectural marvel, inside and out.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

A wonderful display of arts and crafts handmade by local artisans in the Southern Appalachians.