The vast, legendary catacombs hold secrets much stranger than stacked bones.

Step into a pastel time capsule where candy is truly dandy.

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

This semi-spooky remnant of an abandoned hotel provides fantastic views.

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

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

This might just be the TARDIS of bookstores.

The oldest surviving botanic garden in the United States.

An old town theater converted into a celebration of the hobo legacy.

A modern day curiosity cabinet.

Amid the sprawling Defense Intelligence Agency Headquarters is one of Washington's least accessible museums.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

The naval commander’s proudest moment in battle is memorialized in this unique tomb at Arlington Cemetery.

Born a slave on the Arlington estate, Parks dug the first graves at Arlington National Cemetery, and was buried there, too.

Finally, you don't have to be a pious Swedish seaman to relax like one.

Shop selling 500 flavors of soda has something for everyone.

The historic “pink house on the hill” is an architectural gem that now serves as a center for water conservation.

This ancient trail has claimed the lives of over 2,000 people.

Some of Arizona's best spit-roasted tacos al pastor can be found at a weekend swap meet.

A reproduction of earth's many biomes.