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  • Also Known As: Fort Frederick Ruins
  • Also Known As: Frederiksvaern

  • Address: Fortsberg Rd
  • Vicinity: Penisula SE of Coral Bay
  • Travel Genus: Sight
  • Sight Category: Structure

The ruins of Fortsberg, a typical 18th-century citadel fortress, are located on the summit of a high hill commanding Coral Bay. Ruins of a supporting shore battery, containing five cannon, lie 1000 feet southeast of the fort. Begun in 1717, Frostberg was the site of a successful slave rebellion on November 23, 1773. Seizing the fort, the liberated African slaves massacred the garrison and occupied most of the plantations on St John. When two attempts by the Danish authorities failed to suppress the rebellion, 400 French soldiers from Martinique were called in. After six months of fighting, the rebellion was quashed. In 1760, four bastions and a gun deck were added to the fort. During the Napoleonic Wars the fort and adjacent battery were occupied by the British in 1801, and again from 1807 to 1815.

Fortsberg is located on the Fortsberg peninsula of St John, US Virgin Islands. It is privately owned and not open to the public. - NPS

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Y/M/D Person Association Description Composition Food Event
Y/M/D Person Association Description Composition Food Event
1717/00/00 Built
1733/11/23 Slave Rebellion 1733 St John Slave Rebellion
1760/00/00 Four bastions and gun deck added

Data »

Particulars for Fortsberg:
Criteria Architecture-Engineering
Cultural Affiliation Black American
Area of Significance Engineering
Structure Type Fortification
Area of Significance Historic and non-aboriginal
Criteria Historic Event
Criteria Information Potential
Area of Significance Military
Level of Significance National
Owner Private
Disposition Ruin
Crime Slavery
Sight Category Structure

US National Registry of Historic Places Data »

Accurate at time of registration:

Registry Name:
Registry Address:
Registry Number: 76002218
Resource Type:
Owner: Private
Architect: unknown
Architectural Style: No style listed
Level of Significance: National
Area of Significance: Historic and non-aboriginal, Engineering, Military
Applicable Criteria: Event, Architecture-Engineering, Information Potential
Cultural Affiliation: Danish, black
Period of Significance: 1700-1749, 1750-1799
Significant Year: 1717, 1733, c 1760
Historic Function: Defense
Historic Sub-Function: Fortification
Current Function: Agriculture, subsistence
Current Sub-Function:

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