Home to almost 50% of the nation's population, Montevideo is a modern metropolis with a historical old town dating back to colonial times. Surrounding the whole city lies an uninterrupted stretch of white sandy beach. Highlights include Ciudad Vieja (Old Town) with its 18th century buildings, the vibrant Mercado del Puerto, and the bustling commercial activity of Avenida 18 de Julio and its cultural offerings (theatres, museums and art galleries)