This site honors the end of a 100-year boundary dispute between the United States and Mexico—all started by a river's shifting course.

The remains of an old sawmill, gristmill and the surrounding industry dating back to the 18th century.

Dedicated to the history of the health sciences.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

This site commemorates the former inn and restaurant where the chocolate chip cookie was first crafted.

New England's "Witches of Eastwick" locations, in all of their quaint white churched glory.

This historic train station has been converted to a locomotive themed hotel.

This statue commemorates the meeting of the most influential minds of the women’s rights movement.

This monument commemorates the only American soldiers to have directly fought Russians during World War I.

"The House That Love Built" is shying away from "The House That Ghosts Love."

Outsider art or homage to aliens?

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

Contrary to popular belief, this secluded statue doesn't represent Pennsylvania's founder.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

Monument on the spot where in 1778, Bathsheba Spooner had her husband Joshua killed and dumped down his own well.

A hidden piece of Altoona's railroad history in a long-forgotten abandoned town.

This last stalwart of the now-forgotten feminist restaurant movement has been serving food in an activist atmosphere since 1977.

This graceful little figure is a one-of-a-kind version of the cherished character.

A restored Shell gas station from 1937 that includes a tow truck, the original gas pumps, and the original office.