The one-time office of the architectural firm that ushered in the Gilded Age is now a Club Monaco.

Stunningly detailed mosaics in a New York subway station bring life to the Weimaraners of artist William Wegman's work—and to thousands of commutes.

The classic Christmas carol was written at this Massachusetts tavern in 1850.

Burial ground for revolutionary veterans attracts tall tales, ghost hunters, not enough historians and preservationists.

Winter weather reveals a large Italian marble crucifix drowned beneath Lake Michigan.

A former plant in one of the hubs of U.S. steelmaking has been turned into this museum celebrating the history of American industry.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Plaque remembering the 18th century forced relocation of Acadians.

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

Around 160 years ago, this spot marked the location of a wharf along the shores of the Charles River.

The bears may be gone, but their old cages can still be found.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Designed as a place for patients to take in the scenery, this tower has a dark history.

This massive World War II calculator hearkens back to the days when "computer" was a job title.

This mysterious artificial cave has long puzzled New Englanders.

After the state would not recreate this beloved rock formation, three New Hampshire brothers took things into their own hands.

This riverfront statue honors the inventor of the first video games ever sold.

The 92-foot-tall structure is based on the aircraft that carried the first Americans into space.

This small museum is an eccentric shrine to boyhood in the 1960s.

A popular 19th-century natural landmark is now hidden within a sprawling forest.

A giant toy jack made of numerous welded-together fire hydrants.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

The Vermont grave of a 4,000-year-old mummy prince.

A tomb with a window to ensure the interred wasn't buried alive.