This Georgia island has 305 acres of ruins, salt marsh, and live oaks, and zero admission fee

It’s older than the United States and free to visit

St. Simons Island sits off Georgia’s coast, a short drive from Brunswick, and most people pass through it for the beaches.

But tucked into 305 acres of live oaks and salt marsh along the Frederica River, a British fort and colonial town have been waiting since the 1730s.

The National Park Service runs the place, admission costs nothing, and the ruins go deeper than you’d expect from a roadside sign.

Stick around long enough and the history starts to feel less like a textbook and more like something that actually happened here.

Oglethorpe built this place to stop a Spanish invasion

In 1736, British General James Oglethorpe planted a fort and a town on this island with one purpose: keep the Spanish in Florida from pushing north into Georgia.

He named the settlement Frederica after Frederick, Prince of Wales, son of King George II.

Colonists arrived from England, Scotland, and the Germanic states, and the town grew to as many as 1,000 people, soldiers and families living side by side. It worked.

In 1742, British and Highland troops defeated the Spanish at the Battle of Bloody Marsh, and Georgia stayed British.

Walk the same street the colonists walked in 1736

Broad Street cut 75 feet wide through the center of Frederica, running from the town gates all the way to the fort at the river’s edge, about a quarter mile in all.

You walk that same road today, grass-covered now, with excavated house foundations lining both sides. The town spread out in an orderly grid with 84 residential lots split into two wards.

Interpretive signs tell you who lived in each home and what they did for work. It’s a quiet walk, but the scale of what stood here starts to register.

The walls are made from oyster shells

Oglethorpe built in tabby, a colonial-era material made from oyster shells, lime, sand, and water that set hard as concrete.

He chose it because the raw materials were everywhere on the island, far easier and cheaper than hauling in brick from elsewhere.

Tabby was common along the Georgia and Carolina coasts, and the ruins at Frederica show why it lasted.

The walls that still stand carry a rough, layered texture you can see from several feet away, and they’ve held together for nearly three centuries.

The King’s Magazine is the oldest thing standing

Built around 1740, the King’s Magazine is the most intact structure on the grounds. It stored the fort’s gunpowder and ammunition, built from both tabby and brick, thick-walled and low to the ground.

The fort itself sat on a raised bluff above the Frederica River, giving soldiers a clear line of sight to any ship coming upstream.

The design followed a star shape with earthen walls and corner bastions that let defenders cover each other’s positions. Just nearby, the remains of a two-story tabby barracks once housed about 100 soldiers.

The visitor center has archaeology you can actually see

Start at the Visitor Center before you head out to the ruins.

Inside, a 23-minute film called “History Uncovered” walks you through the founding, the battles, and the slow collapse of the town after the military left.

Exhibit cases hold pottery, tools, and personal items pulled from the ground during archaeological digs.

A scale model shows what Frederica looked like at its height, which helps you read the ruins once you’re standing in them.

There’s also a hands-on area where you can try on colonial-era clothing and play 18th-century games.

Rangers walk you through the whole story

Park rangers lead guided walking tours from the Visitor Center down Broad Street to the fort ruins and out to the powder magazine on the riverbank.

They cover the settlement’s founding, how people lived day to day, and the military thinking behind the coastal defense. If you have kids with you, pick up the scavenger hunt in the Visitor Center breezeway.

The first clue starts there, and if they find the secret word by the end, there’s a prize waiting. It turns the whole site into something they’ll actually want to finish.

Watch a cannon fire on select days

On certain dates, mostly fall through early spring, volunteers in colonial clothing work the grounds and give live demonstrations.

You can watch cannon fire and see craftspeople work through trades like blacksmithing, dyeing, and weaving.

The programs show what daily life looked like for the soldiers, tradespeople, and families who made Frederica run. Everything is free and open to whoever’s there that day.

Check with the rangers when you arrive to see what’s on the schedule during your visit.

Kids can earn three different ranger badges here

Fort Frederica runs a Junior Ranger program that can only be completed on-site, so the badge your kid earns here isn’t one they can get anywhere else.

There’s also a Junior Archaeologist program and a Junior Ranger Underwater Explorer program. Complete the Angler and Archaeology Junior Ranger books on top of those and they earn the Fort Frederica Master Patch.

The programs work for children ages eight and up, mixing exploration, history, and real archaeological thinking in a way that doesn’t feel like homework.

Two miles of trails go through the maritime forest

The nature trails on the grounds total about two miles and wind through live oaks, loblolly pines, and palmettos.

Numbered posts along the way identify plant species, and a matching brochure at the Visitor Center helps you follow along.

The Marsh Trail loop opens into clearings where the salt marsh and tidal creeks spread out to the west. The paths run flat, sandy, and grassy, so they work for most fitness levels.

Dogs are welcome on leash, and waste bags are available at the town entrance and at the dock.

The marsh turned red here in 1742

About 4.5 miles south of the main fort grounds on Old Demere Road, the Bloody Marsh unit sits quietly at the edge of a forest-rimmed wetland.

This is where British and Scottish Highland troops ambushed a Spanish force on July 7, 1742, during the War of Jenkins’ Ear.

The name comes from the legend that the marsh ran red with blood, though historians note that casualties may have been limited. A monument and marker stand at the site now. The unit is open daily from 8:30 a.m. to 4 p.m.

The river and marsh are worth the trip on their own

The Frederica River runs along the fort grounds, and the tidal marshes beside it cover about 99 acres, dominated by cordgrass and the birds that feed along its edges. Herons and osprey work the river and marsh year-round.

Standing at the riverbank with the tabby ruins behind you and the water stretching out ahead, you get the full picture of why Oglethorpe picked this spot. The views alone would be worth the stop.

The history just makes it harder to leave.

Visit Fort Frederica National Monument on St. Simons Island

You can walk into Fort Frederica without paying a thing. The monument sits at 6515 Frederica Road on St. Simons Island, Georgia 31522.

Park grounds and trails are open daily from 9 a.m. to 5 p.m. The Visitor Center and gift shop are open Wednesday through Sunday, 9 a.m. to 5 p.m. The Bloody Marsh Battle Site, a separate unit at 11806 Old Demere Road, is open daily from 8:30 a.m. to 4 p.m. The park closes on Thanksgiving, Christmas Day, and New Year’s Day.

Ranger tours and programs are free; ask staff about availability when you arrive.

This article was created with AI assistance and human editing.

Read more from this brand:

• This Georgia Island Just Beat 1,500 Destinations for USA’s Most Underrated Title
• Georgia’s most haunted lighthouse has survived a murder, a war, and 150 years of storms
• Georgia’s Secret Beach Island Has Ancient Oaks, Colonial Forts, and No Tourists – For Now