Hitler took a personal interest in architecture and worked closely with state architects Paul Troost and Albert Speer to create public buildings in a neoclassical style based on Roman architecture.[460][461] Speer constructed imposing structures such as the Nazi party rally grounds in Nuremberg and a new Reich Chancellery building in Berlin.[462] Hitler's plans for rebuilding Berlin included a gigantic dome based on the Pantheon in Rome and a triumphal arch more than double the height of the Arc de Triomphe in Paris.