Evidence of Colchester's four centuries of Roman history is visible everywhere in this ancient town. The Roman walls still stand, together with a Norman castle, a Victorian town hall, and Dutch-style houses built by refugee weavers from the Low Countries in the late 16th century. Archaeological research indicates a settlement at the head of the Colne estuary at least as early as 1100 BC. Two thousand years ago it was the domain of Cunobelin (Shakespeare's Cymbeline), who was king of the Catuvellauni. On Cunobelin's death, the Romans invaded in AD 43. The emperor Claudius made it the first Roman colony in Britain, renaming the town Colonia Victricensis, the Colony of Victory. The settlement was burned during the failed revolt in AD 60 by Boudicca, queen of the Iceni. The English Civil War saw further conflict in Colchester, as the city endured a three-month siege in 1648 before the Royalist forces surrendered. Colchester has always had a strategic importance and still has a military base; a tattoo (military spectacle) is held in even-numbered years.