Scandinavium's "sweeping appearance" comes from the hyperbolic paraboloid shaped saddle roof. A tower was later built with a saddle roof. The house, which includes a saddle roof and open loggia, has 55 rooms. The most basic house, known as rumah beru-beru, has a basic hip and saddle roof. The Church of the Holy Spirit has a Romanesque west tower saddle roof. One of the three buildings has a saddle roof made of 2-by-4 lumber.