Also known as Big Horn Dam and classified in the U.S National Registry of Historic Places, Barker Dam in Joshua Tree National Park is not just a beautiful location with plenty of photo opportunities, but also serves as a gathering spot for desert wildlife. Built in the 19th century, it remains today as a stunning oasis in the desert when full of water. When you visit the dam, look for the sign carved by the brothers who helped build it a century ago, still remaining and well-preserved.