The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

An unlikely Transcendental Meditation haven in the American Heartland built around the ancient Vedic principles of balance and harmony.

The remains of a bustling turn-of-the-century park built to showcase the wonders of electricity.

Lured here by the promise of tens of thousands in gold, Jesse James started a quintessentially American trend of robbing trains in-motion.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

Clean, cold drinking water flows from a nondescript pipe in a roadside rock face.

Internationally recognized group that works to protect the wolf and educate the public about its plight.

Colorful boxes placed over the dead are left to rot and crumble.

Upside-down trees serve as natural flower pots in this hanging garden of Alaska.

A swimming hole in the historic industrial quarry that supplied the marble for the Baltimore Washington Monument.

Ship skeletons haunt Baltimore's waterways.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.

This free, take-a-book shop seems like a trick but isn't.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

Eighteen miniature death-scene dioramas.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

A delightfully quirky blend of oddities spread throughout an old 1920s bank.