Oliver's Battery, Tresco

Oliver's Battery
Tresco in the Isles of Scilly, Cornwall, England
Exterior of Oliver's Battery
Oliver's Battery
Coordinates	49°56′27″N 6°19′54″W / 49.9408°N 6.3317°W / 49.9408; -6.3317
Grid reference	grid reference SV89311351
Type	Artillery battery
Site information
Owner	Duchy of Cornwall
Open to the public	Yes
Condition	Ruined
Site history
Materials	Earth and rubble
Events	1651 invasion of the Scilly Isles

Oliver's Battery is a ruined artillery battery on the island of Tresco in the Isles of Scilly off of Cornwall, England. It was built by the Parliamentarian admiral, Sir Robert Blake, after he invaded Tresco in April 1651 during the years of the interregnum. It was used to bombard the neighbouring island of St Mary's, which was still held by an opposing Royalist army, and forced its surrender several weeks later. The battery comprised a triangle of ramparts, constructed using earth and rubble, which, combined with the natural stone features on the site, produced a substantial, if crude, fortification. It is now ruined, and owned by the Duchy of Cornwall.