In 1968, Milija Mandi?, nicknamed "Gljiva" ("Fungus"), persuaded his friends to help him build a one-bedroom swimmers' retreat in the middle of Serbia's Drina River. Materials were transported in via boat and kayak, while the bigger pieces were taken upstream and set on the water's surface, letting the current do most of the heavy lifting. By summertime, the hut near the town of Bajina Bašta had become a sanctuary for young adults and vacationing students, and Fungus was so proud of the house that, when the weather destroyed it, he built it all again. And again. And again. The dwelling has been knocked down six times in the last 45 years—most recently in December 2010—but the same Fungus Mandi? rebuilds them all. At least, that's how the story goes, anyway. However precisely it began nearly half a century ago, the place still stands on that same rock in the middle of that same river, a fact that earns the structure a spot on both the list of most the world's most remote dwellings and the ever-growing list of awesome architectural oases. It's also a really cool private island, in a roundabout, totally exaggerated way. More photos, below.