Okay, so you're unlikely to travel there just for this — more likely, you're in the area to check out the world's largest salt flat — but if you're already there, don't leave without seeing the Cementerio de Trenes (Train Cemetery). Located just a few kilometers outside town, this collection of vintage locomotives and rail cars were originally meant to move minerals out of the area, and thus bolster the economy. Instead, the rail line construction never fully got off the ground, the trains were used primarily by mining companies, and when that industry collapsed, they were abandoned here, becoming a unique monument to an unfulfilled dream. [via]