Architecture and engineering meet in the design of Hanoi’s city history museum – a special structure that showcases the heritage of Hanoi over the last 1,000 years and was ranked fifth among the ten most beautiful museums in the world. The impressive building with a gross floor area of 30,000 m² resembles an upside-down pyramid. The top floor has the largest dimensions, at 92.4 m x 92.4 m. Moving downwards, the dimensions decrease – to just 42 m x 42 m on the ground floor. The building has an atrium from which all exhibition floors can be accessed. The architecture firm of Gerkan, Marg and Partners designed the new building. Inros Lackner was responsible for structural design, technical building systems and infrastructural planning.