The hip flask houses are a group of four apartment buildings built in 1959 and 1961 in the Länsikorkee area of the Tapiola district in Espoo, Finland. The buildings have nine floors each and are 30 metres high. They were designed by architect Viljo Revell. The Hip flask houses dominate the appearance of the area and have become a sort of symbol of Tapiola. The Tapiola area is a culturally significant architecture area and the Hip flask houses are among the landmarks of the area.