Oram's Arbour

From Wikipedia

Oram's Arbour was an enclosed settlement (oppidum) during the Iron Age, in what is now Winchester. Limited dating evidence suggests the enclosure was dug in the early-mid first century BC.[1] The town wall of the Roman civitas capital of Venta Belgarum which succeeded the Iron Age settlement cut across its eastern end.
Today it is a small grassy park in Winchester, and was formerly used for the annual Winchester Hat Fair both as a picnic site and to stage outdoor theatre and acrobatics.