The Children's Museum of Indianapolis is the world's largest children's museum. It is located at 3000 North Meridian Street, Indianapolis, Indiana, United States in the United Northwest Area neighborhood of the city. The museum is accredited by the American Alliance of Museums. It is 472,900 square feet (43,933.85 m²) with five floors of exhibit halls and receives more than one million visitors annually. Its collection of over 120,000 artifacts and exhibit items are divided into three domains: the American Collection, the Cultural World Collection, and the Natural World Collection. Among the exhibits are a simulated Cretaceous dinosaur habitat, a carousel, and a steam locomotive.