A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

The national park was once a plantation estate.

Washington's iconic carousel has a nice piece of Civil Rights history.

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

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

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

Home to items never before seen by the public.

South Korea's women of the sea have completely flipped their society's structure by becoming revered fisherwomen.

South Korea's only sex-themed park.

A historic arena where the Beatles played their first concert in the U.S.

Largest Roman Catholic church in North America.

An astounding collection of medical specimens, including bits of President Lincoln.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

A museum dedicated to exhibiting remarkable outsider art.