This pool is 12 by 7 metres 39 by 23 feet , is lined with bricks, and was covered with a tar-based sealant. Roman emperors had private swimming pools in which fish were also kept, hence one of the Latin words for a pool was piscina. Gaius Maecenas was a rich Roman lord and considered one of the first patrons of arts. They were decorated with flights of steps, punkalas or pots of abundance, and scroll design. As early as , six indoor pools with diving boards existed in London, England.