The vast, legendary catacombs hold secrets much stranger than stacked bones.

Before Nixon, "watergate" meant canals.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

It was once the base for a series of domestic terror attacks.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A derelict bit of transportation infrastructure hidden in the woods.

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

A wondrous old library overlooking the nation's capital.

A historic neighborhood church is reborn as a psychedelic arts collective.

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

If New Orleans is the birthplace of the "cocktail," why does their own museum of cocktail memorabilia beg to differ?

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

This "second" cemetery represents New Orleans' attempt to keep cholera at bay.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

A little piece of Paris in the sultry south of the U.S.

The crumbling remains of a 19th century fortess.

A 19th-century shrine covered with prosthetic body parts as votive offerings.

A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

Imagine playing a version of Legends of the Hidden Temple, but with a distinctly Southern Gothic flare.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

Despite the ever pressing encroachment of urban sprawl this grand New Orleans manse still stands.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

A hurricane-stricken oak tree has been reborn as a beautiful chainsaw artwork.