On 3 May 1957, a group of citizens, including Otto Frank, established the Anne Frank Stichting in an effort to rescue the Prinsengracht building from demolition and to make it accessible to the public. The Anne Frank House opened on 3 May 1960. It consists of the Opekta warehouse and offices and the "", all unfurnished so that visitors can walk freely through the rooms. Some personal relics of the former occupants remain, such as movie star photographs glued by Anne to a wall, a section of wallpaper on which Otto Frank marked the height of his growing daughters, and a map on the wall where he recorded the advance of the Allied Forces, all now protected behind acrylic glass. From the small room which was once home to Peter van Pels, a walkway connects the building to its neighbours, also purchased by the Foundation. These other buildings are used to house the diary, as well as rotating exhibits that chronicle aspects of the Holocaust and more contemporary examinations of racial intolerance around the world. One of Amsterdam's main tourist attractions, it received a record 965,000 visitors in 2005. The House provides information via the internet and offers exhibitions that in 2005 travelled to 32 countries in Europe, Asia, North America, and South America.