The former Fort Burnside Harbor Entrance Control Post disguised as a mansion at Beavertail State Park

Beavertail State Park - Jamestown, RI

Where the coastline kept its secrets

During World War II, the Harbor Entrance Control Post at Fort Burnside was designed to look like a typical Rhode Island seaside cottage. Behind the shingles: reinforced concrete, radar, and the nerve center of Narragansett Bay's defense.

  • Dec. 4, 1941 Fort Burnside established
  • 185 acres acquired by eminent domain, 1942-43
  • 17 HECPs nationwide - Beavertail guarded Narragansett Bay
  • 1942-1978 continuous military presence

The mansion that wasn't a mansion

Outwardly built to mimic a country farmhouse, the Harbor Entrance Control Post coordinated Battery 213's 6-inch guns, the anti-submarine nets across both passages of Narragansett Bay, and an underwater network of magnetic detection loops stretching miles to sea.

Officers from the Army's 243rd Coast Artillery Regiment and the U.S. Navy worked side by side here, monitoring every vessel approaching Newport Harbor - home to the Atlantic Fleet's critical anchorage.

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Beavertail Lighthouse and shoreline at the former Fort Burnside site

From the collection

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Visiting Fort Burnside

  • Location: Beavertail Road, Jamestown, RI 02835
  • Park hours: Sunrise to Sunset, daily
  • Admission: Free (state park parking)
  • Note: The HECP Mansion is a private residence - viewable from the perimeter path only.
Full visitor guide

Support the museum

The Fort Burnside Communication & Coastal Defense Museum relies on members to document, restore, and share Rhode Island's wartime heritage.

Private

$35 / year

  • Quarterly "Signal" Newsletter
  • Fort Burnside window decal
  • Digital archive access
Join at this level

Colonel

$250 / year

  • All Sergeant benefits
  • Name on commemorative plaque
  • VIP reception at The Mansion
Join at this level

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