A mysterious lake provides fresh water without any source, somehow restoring itself from atop its mountaintop perch.

Dedicated in 1895, this is the world's first tribute to the hardworking newspaper delivery boy.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

One of the largest festivals of flowers in North America takes place, appropriately, in the Flower City.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

Its original statue was deemed so ugly, locals called it “Scary Lucy.”

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

A sewing machine tycoon built this miniature castle for the people and to beautify a lakeshore.

This unique crypt designed by Frank Lloyd Wright for his longtime friend was not completed in either man's lifetime.

A forsaken wonder in the middle of the East Side neighborhood.

An elaborate memorial to a man local legend says died of a broken heart.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

The absurd creation is a compulsory destination for selfies in Buffalo.

A monument honoring those who died in the Great Famine of Ireland.

Buffalo's abandoned concrete grain elevators are getting a second life.

A collection of unique outdoor sculptures surounded by the beauty of nature.

An abandoned tuberculosis hospital moulders on into an uncertain future.

This former hub for crafty philosophers was founded by a writer who died aboard the infamous RMS Lusitania.

A Gothic gym and community space that encourages fitness for misfits.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The world’s first penitentiary, meant to be humane, drove men insane.