The attractions and rides that remain from the original 1925 park include the Giant Dipper, a wooden roller coaster that is listed on the National Register of Historic Places. Another historic facility is The Plunge, an indoor swimming pool. The Plunge was originally a salt water pool called the Natatorium and was the largest salt-water pool in the world; it now contains fresh water. In 2013 the California Coastal Commission approved plans to remove a portion of a large mural by artist Wyland during planned renovations. The plunge was closed in 2014 due to disrepair. Plans to demolish and rebuild the Plunge were approved in January 2016. It reopened in 2019 over the Fourth of July weekend after a $12 million renovation.