A few tiger skulls, skins and bones are preserved in museums. The British Museum in London has the largest collection, with two skins and three skulls; others include the Senckenberg Museum in Frankfurt, the Naturkunde Museum in Stuttgart, the Naturalis museum in Leiden and the Zoological Museum of Bogor, Indonesia, which owns the remnants of the last known Bali tiger. In 1997, a skull emerged in the old collection of the Hungarian Natural History Museum and was scientifically studied and properly documented.