The Gateway Building was completed first, which had its topping out ceremony on 11 June 1872 and was ready for occupation at the end of 1873; for years Ludwig II used the upper floor as provisional accommodation when he visited the site. Building of the Palas commenced in September 1872; for structural reasons the latest technology was required in order to incorporate the large Throne Hall subsequently requested by the king, which was built as an encased steel construction. The topping out ceremony was on 29 January 1880. The decoration and technical fittings of the interior were only completed in mid 1884, though without all the final details. Ludwig II only ever saw his new castle as a building site; the Bower and the Square Tower, simplified versions of the originally planned buildings, were not completed until 1892.