“We need a natural place to clear up the melancholy mood in busy urban life,” according to principals with the architectural firm Doarchi. The Tower of Spiral is located near Shenzhen, China, surrounded by mountains. The site is in a highland area, with a pool reserved for irrigation. Around the pool, Doarchi created a straightforward and simple ascending space, so that people can observe and feel nature at different latitudes. Tower of Spiral provides a slow-flowing way of viewing one’s surroundings. Visitors enter the relatively narrow tower and climb gradually to the top. Tower of Spiral’s core is formed by the spiral steps that twist a total of 810 degrees, supported by steel columns. Doarchi encased the structure in a concertina-like steel shell, the upper sections covered with plastic film and the lower with tensioned metal mesh.