Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

The largest collection of historic military firearms in the United States.

America’s oldest community theater, this Boston club has been in operation since 1877.

Statue commemorating the use of ether in anesthesia.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Two thousand artifacts from around the world collected by one woman who loved to travel.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

A pair of black granite tails dive into a sea of grass in landlocked Vermont.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

This former coal gasification plant found a curious second life as a popular public park.

America’s smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

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

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

Yo, Adrian!

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

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

Mural made of 100,000 pieces of hand blown glass, and one of the largest glass murals in the US.

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

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

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

This stately clubhouse has showcased German-American culture for over a century.

Inside the unassuming cemetery chapel is a magnificent stained glass window and mosaics.

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.