At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

Drink the 'Blood of Christ' in this Roman Catholic fever dream.

The world's largest wooden structure.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

Amphibious mascots display a quirkier side to this luxury hotel's rich history.

Visit Europe's largest subterranean waterfall, carved by water from the glaciers of the towering peaks surrounding the valley.

House a green chile pork Crunchwrap swaddled in hot, fresh tortillas.

Located inside a former bread factory, this museum explores a century of transportation history through innovations that were extraordinary or failures—sometimes both.

Sambusas get a Deep Southern twist at this Somali chai haven.

At this Nashville restaurant, cheese and charcuterie arrive via conveyor belt.

Located inside a former record pressing plant, this recording studio pays homage to the techniques and gear of a bygone age.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

The only tennis court that falls under the jurisdiction of the central bank.

The maritime museum that boasts the largest nautical library in the western hemisphere.

The location where the American Revolution ended.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

The oldest continuously operating fish market in the United States.

One of the last mosaic tile facades found in the city.

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

One of the largest trees of its kind in California.