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

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

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

The most photographed house in Maine looks good enough to eat.

Hear the quietest sound from across the dome.

Built to bless whalers before their voyages, this Massachusetts church now features a ship-shaped pulpit.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The famous winding walk at Chartres is surrounded in mystery and myth.

A trading post in the North Pole where children send letters.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

This burger joint is named after everyone's favorite carnival prize and is adorned with a giant one over the door.

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

An adorably sweet display of sculpted Precious Moments figurines.

Hot Doug's "Hot Dog" Stand.

This luxury shopping lane has been protected by its own tiny police force for over a century.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

It's not your typical library, memorial, or book store.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

A giant donut stands as a popular symbol of Los Angeles iconography.