Memorial Day is the unofficial start of summer, so of course we’re heading to the beach—the city beaches of Valencia, Spain. Valencia is famous for its beautiful, golden sand beaches, where people build incredible sand sculptures, like this one on Malvarrosa Beach. An elaborate sand sculpture can take over a week and multiple people to build. In fact, the world’s tallest sandcastle reached over 50 feet into the sky. But if you’ve got the time, sand, and water, you too can build a cool sandcastle.