Gloucester, England, a city in Gloucestershire. It is on the Severn River about 115 miles (185 km) west-northwest of central London. Gloucester is an industrial city, manufacturing chemicals, machinery, and electrical equipment. It also has shipyards and is an inland port. Its cathedral, built 1089–1498 on the site of a seventh-century abbey, has fine examples of Gothic architecture. The Roman settlement of Glevum existed here in the first century A.D. Gloucester was chartered in 1155.