Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

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

This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

These medicine cabinet staples are part of the museum's collection of everyday objects.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

The oldest farmer's market in America is so ancient it was approved by the King of England.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

This Moab institution functions as both a rock store and a small natural history museum.

Take a dip in the world's largest mineral hot springs pool.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

A giant chess set, minus the psychedelic drug trip.

The headquarters of a secretive order is also a beautifully-designed park.

An extensive collection of ancient Egyptian artifacts and mummies.

Guarded by the Angel of Grief, the Stanford family tomb attracts an odd mix of halloween revelry and somber contemplation.

A hidden world of exotic succulents and cacti.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

An unassuming stone building houses New York City's oldest seismic station almost 30 feet below the Bronx.

The first and only carousel with a lineup entirely of insects.

Seriously good slices of Sicilian pizza lurk at the back of the Bronx's oldest enclosed market.

A small graveyard is hidden in the midst of a bustling university campus.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.