The state's oldest continuously operating museum houses more than 5,000 Civil War artifacts.

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

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The second oldest continuously operating bar in Louisiana.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The curiosities and wonders of pharmacy in a delightful historic building.

The final resting place of New Orleans' most famous voodoo priestess.

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 little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

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

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Largest Roman Catholic church in North America.

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

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

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

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

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

"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!”

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

A much-maligned monument to teetotalism.

Look closely and you’ll notice that the color changes a third of the way up the tower.