A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

Puerto Rico's oldest rum producer started its 140-year-old business with "a little barrel."

This small fort played a huge role defending Puerto Rico’s capital city.

The crumbling remnants of this 19th-century quarantine hospital hint at the touristy island's darker past.

Everyone from Alan Ginsberg to The Rolling Stones has stopped by this classic dive bar.

A series of magical limestone formations along the coastline of the country island of Antigua.

The remains of a historic plantation nestled in between a parking lot and the rental car return at Reagan National Airport.

This cannon dating to 1755 has stood guard at this suburban intersection since 1915.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

The home of the first American-born saint is one of the only curved buildings in New York.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The only recreation of William Shakespeare's indoor playhouse.

These unusual rooms on wheels are holdovers from the 1960s.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

Decades before the scandal, this staircase on the river was a literal "water gate."

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.