Large aviaries are often found in the setting of a zoological garden (for example, the London Zoo, the National Zoo in Washington, D.C., and the San Diego Zoo). Spacious walk-in aviaries also exist in bird parks such as Jurong BirdPark in Singapore. Pittsburgh is home to the USA's National Aviary, perhaps the most prominent example in North America of an aviary not set inside a zoo. However, the oldest public aviary not set inside a zoo in North America, the Hamilton Aviary is located in Hamilton, Ontario, Canada. Tracy Aviary is an example of a bird park within a public urban park, Liberty Park in Salt Lake City, Utah. Some smaller sized aviaries can often be found in European manorial gardens, such as Waddesdon Manor, UK, and Versailles, France. Some public aquaria, such as the Oregon Coast Aquarium, Newport, Oregon, or the Monterey Bay Aquarium, have aquatic aviaries.