This 15-foot tall obelisk commemorating the Philadelphia-Baltimore railroad connection sat neglected for over a century.

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

The former locus of Boston's high culture has been shuttered and buried for over 70 years.

Those belting out show tunes might not realize this piano bar marks the site where Thomas Paine died in 1809.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A no-frills cinephile haven known for showing offbeat, underseen films.

Unrepaired walls from a 1920 anarchist bomb attack.

Check out the underground party scene at the "Burning Man of Brooklyn."

The ruins of a 19th century shelter run by the Independent Order of Odd Fellows.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

This mosaic-covered bar is brimming with curated curios.

Russian history in San Francisco.

A 300-ship graveyard, with a few still visible at low tide.

A psychedelic labyrinth on the San Francisco bay.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

These machines have been collecting dust for decades.

A logging-themed roadside restaurant surrounded by museum-quality machinery and artifacts from the industry's heyday.

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

A volcanic fissure over two miles long and up to 70 feet deep.

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.