Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

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

In the early 1800s, surgery was also a show.

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

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

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

A rare view of a preserved Victorian science museum.

A layered tribute to the work of mosaicist Isaiah Zagar.

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

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.

This stockpile of junked electronic and mechanical gadgets is a favorite among Hollywood prop masters.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

The ghostly remains of an accidental sea.

A museum dedicated to a sea that should have never been.

One of the ghostly stops along Route 66.

Hidden in the back of a disused small town hotel is a dive bar shellacked with over a million pennies.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

In the days before HD projectors and IMAX, some of the most powerful projectors belonged to planetariums.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

The Los Angeles flood disaster that took 400 lives and ended the career of William Mulholland.