Mammoth Cave National Park

World's longest known cave system

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Where the Star-Spangled Banner was born: a compact fort with sweeping harbor views and living history. It’s an easy win—flat paths, open lawns, and a visitor film that sets the scene in under 15 minutes.

Start at the visitor center for your map, then follow the ramp to the east wall for the best harbor vantage. Time your visit for a flag raising or lowering—the ranger talk turns the place into a story you’ll remember.

For a slower visit, circle the star-shaped ramparts clockwise and watch ships move in and out of the Patapsco.

What’s new? Updated today

Sunset flag lowering 6:30pm (Fri–Sun)
Temporary exhibit: War of 1812
Harbor shuttle every 20 minutes

What are the hours? — 9:00–17:00 (daily)

Hours may vary for holidays and special events; check the official site before you go.

How much does it cost? — $15 adults · kids free

Admission covers the fort and visitor center exhibits; special tours may be extra.

Where do I park? — On-site lot + overflow

Lots can fill on weekends by mid-day; arrive early or consider rideshare.

Is it accessible? — Flat paths; accessible restrooms

Most ramparts have graded access; some historic areas may have uneven surfaces.

Arrive 30 min before sunset for the lowering ceremony and best light.
Wind picks up on the ramparts—bring a light jacket even in summer.
Stroller route: enter via visitor center, ramp to east wall loop.

The world’s longest known cave system is Mammoth Cave with more than 400 miles of passageways (2X the next closest, Sac Actun underwater cave). The name refers to the mammoth size of the rotunda at the cave’s entrance and has nothing to do with wooly mammoths as often assumed.

A variety of cave tours show off Mammoth Caves top features and highlights, including the sheet of dripping rock known as Frozen Niagara, Grand Avenue,and Fat Man’s Misery.

Above ground the Green and Nolin Rivers run through Mammoth Cave National Park, providing an entirely different world of adventurous options including hiking, biking, boating, and fishing.

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Dale Pate (NPS/Flickr)

Mammoth Cave National Park

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