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

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Mysterious rocks that ring musically when struck.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

World's first "penitentiary," meant to be humane, drove men insane.

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

Developed by focused shutterbugs, this museum exposes visitors to more than 6,000 different cameras.

Extraordinary objects lurk in this quintessential regional museum.

America's first federal monument.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

The narrowest house in America is seven feet of pure spite.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

The home of pigs, snakes, chameleons, and the alleged largest bunny in the United States.

This old-fashioned carhop restaurant gave the world the waffle cone.

The skeletal white beams stand as a monument to religious dissent.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

Outsider art meets paleontology at this roadside reptile repository.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.