The Nanzen-in pagoda that now stands at Nanzen-ji Temple is the remains of an imperial villa used by the Emperor Kameyama, and the origin of the temple itself. The structure was burned down during the Onin War (1467 - 1477 AD), but it was rebuilt by Tokugawa Tsunayoshi's mother in 1703. The garden here is especially peaceful, and it has been designated as one of the three most famous historical gardens by the Kyoto municipal government. Also blending into the Japanese scenery on the grounds of Nanzen-ji Temple is an archaic looking arched red brick structure called the Suirokaku. This is a raised aqueduct dating from the Meiji Period that forms part of the Lake Biwa Canal used to bring water from Lake Biwa to Kyoto. Measuring some 93m in length, 4m wide, and 14m high, even today water flows along it at a rate of 2 tonnes every second, an invaluable part of daily life in Kyoto. Built in the style of the ancient Roman raised aqueducts, today there is a pedestrian walkway along the top. While all the rivers in Kyoto flow southwards, the incline of the aqueduct has been adjusted so that the water flows northward. In 2005, the part of the canal on the grounds of Nanzen-ji Temple was designated a national historical site, and now the Suirokaku canal is considered part of the landscape in Kyoto.