Aside from the canals and trajineras, the best-known attraction in Xochimilco is the Dolores Olmedo Museum. This museum was once the home of socialite Dolores Olmedo. Before this, it was the main house of the La Noria Hacienda, established in the 17th century. Before she died, Ms. Olmedo decided to donate her house, much of what was in it and her art collection to the public as a museum. The buildings are surrounded by gardens planted with native Mexican species, around which wander peacocks. Another area houses a number of xoloitzcuintle dog. The museum's collection includes about 600 pre Hispanic pieces, the largest collection of works by Diego Rivera at 140 pieces, as well as a number of works by Frida Kahlo and Angelina Beloff. It also contains rooms filled with furniture, items from many parts of the world and everyday items used by Olmedo and her family. In November, the museum set up a monumental altar to the dead.