Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

The unbelievably opulent home built for an infamous newspaperman.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

A much-maligned monument to teetotalism.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

This pun was simply waiting to come to life, and one defense contractor made it so.

America's first public mental health facility.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

Statue commemorating the use of ether in anesthesia.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

Beautiful Gothic-inspired lighthouse stands out among the run-of-the-mill striped fare on Bodies Island.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.