Brooklyn Botanic Garden (BBG) is a botanical garden in the borough of Brooklyn, New York City. It was founded in 1910 and is in Mount Prospect Park in central Brooklyn, adjacent to Prospect Park and the Brooklyn Museum. The 52-acre (21 ha) garden holds over 14,000 taxa of plants and has nearly a million visitors each year. It includes a number of specialty "gardens within the Garden", plant collections, the Steinhardt Conservatory that houses the C. V. Starr Bonsai Museum, three climate-themed plant pavilions, a white cast-iron-and-glass aquatic plant house, and an art gallery.