The Elephant and Rhino houses were completed in 1968, and ropes were later installed in 1990 to replace the chains. The grounds of both buildings were redesigned in 2012 to include trees and an animal friendly scrub basin, increasing its total size to . In addition, a clay wallows and two basins with interchangeable substrates (e.g. bark mulch, gravel.) were added. Currently, there are two living elephants at Wilhelma: "Pama" (1966) and Vella (1967). Previous elephants include Vilja, the oldest living elephant in Europe, died July 10, 2010 (cause of death is thought to be circulatory collapse), and "Molly", whom was euthanized in July 2011 at the age of about 45 years. Other elephants at the zoo include the African elephant "Jumbo" and, briefly, an Asian bull elephant sent by the Indian state as a gift to Stuttgart. Another construction project, announced in a speech, that will begin in 2020 is in the planning stages.