This unfinished fort in Maine has guarded a river border since before America existed

It’s Been Standing for 275 Years

Fort McClary State Historic Site sits on a hill at Kittery Point, Maine, where the Piscataqua River separates Maine from New Hampshire before it empties into the Atlantic. A fort has held this ground for more than 275 years.

Below you, the river runs toward Portsmouth, less than four miles across the water. Around you, 27 acres of open lawn, old stone walls, and worn trails spread out in every direction.

The story here goes back further than most people expect, and the grounds still carry the marks of wars, builders, and plans that never got finished.

Five wars and barely a shot fired

Coastal defenses went up here in the late 1600s to protect the river.

The fort you see now dates to 1808 and carries the name of Major Andrew McClary, killed at the Battle of Bunker Hill in 1775.

Troops manned these walls during five wars, from the Revolution through World War I. Despite all that service, the fort saw almost no combat.

Maine took over the property in 1924, and in 1969, the site was listed on the National Register of Historic Places.

A white six-sided tower on the hilltop

The blockhouse catches your eye the moment you walk in.

Builders finished the six-sided structure around 1846, and it remains one of the last blockhouses of its kind ever built in Maine.

White paint covers the outside, and the whole thing sits high on the central hill, visible from the water and across the grounds. Its shape draws photographers from all over.

You can spot it from the parking area before you even start walking.

Stone, granite and squared logs stacked three layers high

Look closely at the blockhouse and you see three different building materials stacked on top of each other. The base is mortared fieldstone pulled from nearby land.

Above that, workers laid cut granite for the first-story walls. The upper level switches to squared logs.

Narrow slots cut into the stone gave riflemen a line of sight, while larger openings on the upper level left room for cannons. Each layer tells you something about how defense worked in the 1840s.

Walk inside the blockhouse museum

A 1987 restoration turned the interior into a small museum.

Historical placards and old photographs line the walls, walking you through the fort’s role in regional defense.

A cannon sits on display inside, and the exhibits cover everything from the river’s military importance to the soldiers who served here.

The blockhouse ranks among the best-preserved structures on the grounds, and standing inside gives you a feel for how tight these quarters really were.

Three cannons and a battery built for nine guns

At the foot of the hill, near the water, a semi-circular Lower Battery once held positions for nine guns. Three naval cannons still stand on the grounds, close enough to touch.

A shot furnace once heated cannonballs right here before soldiers loaded them into the guns. The layout makes the mechanics of coastal defense easy to understand.

You can stand at the battery, look out over the Piscataqua, and see exactly what these guns were pointed at.

Scattered granite blocks from a fort never finished

Between the blockhouse and the shore, large granite blocks sit jumbled across the ground. Workers abandoned them around 1867 when funding ran out on a major rebuild.

The plan called for a much larger fort, but construction stopped cold and never restarted.

Now the scattered stone gives the site a raw, half-built look that feels different from any other fort you have visited. You can walk among the blocks and piece together what the builders had in mind.

Fortified posts, powder rooms and a riflemen’s house

Two unfinished caponiers, fortified defensive posts, sit in front of and behind the blockhouse. One rises right above the Piscataqua River.

Nearby, a granite powder magazine stored gunpowder for the cannons. A brick riflemen’s house and old powder houses still stand across the grounds.

The mix of structures pulls from several different construction periods, so you move through decades of military building as you walk from one to the next.

The 0.3-mile loop hits every major stop

The Fort McClary Trail covers just 0.3 miles and works for all ages. The path takes you past the caponier, along the ramparts, and up to the blockhouse.

From there, it drops down past the riflemen’s house, the powder houses, and the three cannons before looping back. You can walk it in 15 minutes or take an hour reading every placard along the way.

Either approach covers the main features without breaking a sweat.

Sailboats, two lighthouses and views into New Hampshire

The hilltop gives you a wide look over the Piscataqua River and Pepperrell Cove.

Gooseberry Island and Fishing Island sit offshore, and during warmer months, sailboats and yachts move through the harbor below. Two lighthouses rise in the distance across the water.

Turn slightly, and you can see Fort Point on the New Hampshire side. Bring a pair of binoculars if you have them, because the distance detail rewards a closer look.

A picnic area with a pond and a wildlife platform

Across Pepperrell Road from the fort, a grassy picnic area spreads out with tables on the lawn and a covered pavilion.

A short trail leads from there to Fort McClary Pond, where a platform lets you sit and watch wildlife over the water.

After you have spent time climbing the hill and walking the fort grounds, this side of the road gives you a flat, quiet place to sit down, eat lunch, and let the kids run around on the grass.

A tidal island appears when the water drops

The nearby Barters Creek Trail runs less than half a mile through the woods, following its namesake creek toward the shore. At low tide, a small island becomes reachable on foot.

The trail ends near the pilings of a former dock, and the whole walk feels removed from the fort grounds. If you time your visit right, you can cross to the island and back before the water rises.

Check the tide schedule before you head out.

Explore Fort McClary State Historic Site in Maine

You can find Fort McClary on Route 103, Pepperrell Road, at Kittery Point.

The site opens daily at 10 a.m. and stays open until sunset from Memorial Day through Columbus Day, with a fee to enter.

In the off-season, you can park outside the gate and walk in during the same hours, though facilities close down. Picnic tables and a covered pavilion sit across the road.

Portsmouth, N.H., is less than four miles away.

This article was created with AI assistance and human editing.

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