Amongst the city's national museums and galleries is the National Gallery of Canada; designed by famous architect Moshe Safdie, it is a permanent home to the Maman sculpture. The Canadian War Museum houses over 3.75 million artifacts and was moved to an expanded facility in 2005. The Canadian Museum of Nature was built in 1905, and underwent a major renovation between 2004 and 2010. Across the Ottawa River in Gatineau is the most visited museum in Canada, the Canadian Museum of History. Designed by Canadian Aboriginal architect Douglas Cardinal, the curving-shaped complex, built at a cost of US$340 million, also houses the Canadian Children's Museum, the Canadian Postal Museum and a 3D IMAX theatre.