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

When it opened during the final years of the embargo, all the drinks and cigars were free.

The walls of the iconic dome are hollow and have a secret stairway.

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

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

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

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

A painfully obvious spy house sits right across the street from the Russian Embassy.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

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

Home to items never before seen by the public.

Parts of the civil rights movement unfolded in this historic eatery, helmed by the "Queen of Creole Cuisine."

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

A house of courtship where the Jazz Age's most storied lovers got their start.

Legend says a primate-like cryptid prowls this otherworldy sliver of the Louisiana bayou.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

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

Storyville was New Orleans' historic red light district and hotbed of jazz music, sometimes referred to simply as "The District."

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

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

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

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

The second oldest continuously operating bar in Louisiana.