There are two towns in the Netherlands called Oss and Sneek and—wait—it gets even better. Each of those towns is now home to a giant sandcastle that you can sleep in. The two temporary hotels were created by event planning company Global PowWow out of (reinforced) sand (and concrete), and there are also all kinds of sand sculptures on the premises. As the Google-translated website puts it, "There is now temporarily the possibility of staying in a 'magical world of sand.'"
· Fleeting Wonders: Finally, You Can Sleep in a Sandcastle [Atlas Obscura]