A tower is a tall structure, usually taller than it is wide, often by a significant margin. Towers are distinguished from masts by their lack of guy-wires.
Towers are generally built to take advantage of their height, and can stand alone on the ground, or as part of a larger structure or device such as a fortified building or as an integral part of a bridge.
Catalonia (English /kætəˈloʊniə/, /kætəˈloʊnjə/; Catalan: Catalunya[kətəˈɫuɲə] or [kataˈluɲa]; Spanish: Cataluña[kataˈluɲa]; Occitan: Catalonha[kataˈluɲɔ]) is an autonomous community of Spain, with the official status of a nationality. Catalonia comprises four provinces: Barcelona, Girona, Lleida, and Tarragona. Its capital and largest city is Barcelona, the second largest city in Spain after Madrid, and the center of one of the largest metropolitan areas in Europe. Catalonia covers an area of 32,114 km² and has an official population of 7,535,251.