The ruins of the bathhouse used by the ill-fated last Aztec emperor still lie in Chapultepec Park.

A vertically floating hemlock controls the waves and weather at Crater Lake.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The world's last remaining store of its kind.

The abandoned coal loading dock is a canvas for unsanctioned art.

The fastest transatlantic ocean liner sat abandoned in a Philadelphia shipyard for decades.

Welcome to the home of the world's largest typewriter company.

The first American axe throwing club.

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

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

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

This sculpture of a fisherman spent six years at the bottom of the Schuylkill River.

Yo, Adrian!

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

A rare view of a preserved Victorian science museum.

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

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

A layered tribute to the work of mosaicist Isaiah Zagar.

These three lighthouses played a fundamental role in the maritime life of Eastham.

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

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

A beacon atop a downtown building provides Bostonians with weather forecasts and baseball news.

Ice cream stand, snack bar, and time capsule of milk conveyance.

A former church transformed into a public library.