CIUDAD RODRIGO, a town on the Agueda, province of Salamanca, Spain. It is fortified, and has some good public buildings, including a cathedral (built A.D. 1190), several churches and convents, an arena for bull-fights, &c. In the principal square are three Roman columns brought from the ancient Malabriga. A bridge connects the city with the suburbs, which are surrounded by well cultivated and fertile plains. The town, otherwise uninteresting, has been rendered famous by the sieges it underwent during the Peninsular war. It was taken by Marshal Massena in 1810, and again by the Duke of Wellington in 1812. Pop. 4500.