Sprout Tower (Japanese: マダツボミのとうMadatsubomi Tower) is a large pagoda located in Violet City in Johto. The tower itself is over 100 feet tall and is held together by a giant flexible pillar that shakes from side to side. This flexibility protects the tall tower from earthquakes and symbolizes the battles that are occurring on upper floors. This technology is now known as 柔構造jūkōzō, and applied to hundreds of modern high-rise buildings. Legend has it that a 100-foot-tall Bellsprout was used to make the swaying pillar. It is inhabited by monks who study diligently and teach that all living beings coexist through cooperation. These monks solely train Bellsprout, and occasionally Hoothoot as well.
Sprout Tower is a three tiered tower with multiple eaves. Like the Bell Tower and the Burned Tower, it is constructed solely out of wood, creating a multi-story effect. The design of Sprout Tower is inspired by Buddhist temples in the Nara Prefecture of Japan, such as Kōfuku-ji and Hōryū-ji temples. Surrounding the tower is a beautiful lake in the center of Violet City, hosting several architectural bridges making its way across the water. Sprout Tower is dedicated to the gentle and peaceful nature of Bellsprout. The giant spine-like pillar located in the center of the tower acts as a support for the old tower structure, and it even protects the tall tower from sudden earthquakes. It is said that the main swaying pillar was, in fact, once a 100-foot-tall Bellsprout.
Spout Tower is three stories tall. The ground floor is much like a visitors floor, where tourists come to see the unique style of which the tower was formed. There are two other upper levels, which are dedicated to Pokémon Training; monks who study diligently and train their gentle Bellsprout come to teach that all living beings coexist through cooperation. The monks of the tower train solely Bellsprout and have at least one in their party, and other have occasionally captured Hoothoot as well. The upper floors are also riddled with wildRattata that inhabit the wooden pillars and columns. And as night falls, ghosts are said to appear in the tower, in the form of Gastly.
It is actually possible to use Dig to escape from Sprout Tower—even the top floor—and return to the entrance; this is because, as can be seen from the in-battle background used in Generation IV, Sprout Tower is classified as a cave area, rather than a building, likely to allow wild Pokémon to be found. This is also the case with the Bell Tower and Burned Tower.
Due to this, unlike other buildings, Burmy will take on its Sandy Cloak, rather than its Trash Cloak, if it battles here.