The Smithsonian Institution ( smith-soh-nee-ən) is an educational and research institute and associated museum complex, administered and funded by the government of the United States and by funds from its endowment, contributions, and profits from its retail operations, concessions, licensing activities, and magazines. The Smithsonian has requested $797.6 million from Congress in 2011 to fund its operations. While most of its 19 museums, its zoo, and its nine research centers facilities are located in Washington, D.C., sites are also located in New York City, Virginia, Panama, and elsewhere. The Smithsonian has over 136 million items in its collections, publishes two magazines named Smithsonian (monthly) and Air & Space (bimonthly), and employs the Smithsonian Police to protect visitors, staff, and the property of its museums. The Institution's current logo is a stylized sun. The Smithsonian Institution is the largest museum complex in the world, and many of its buildings are historical and architectural landmarks. In addition, 156 other museums are Smithsonian affiliates.