Dark Roasted Blend has a beautiful gallery of Spreepark PlanterWald (originally called Kulturpark Planterwald) a Soviet-era abandoned themepark in central Berlin, which is gracefully rotting away. This is a Boing Boing/Cory Doctorow trifecta: abandoned themeparks, Soviet kitsch, and urban exploration. Yes, please!
When it opened in 1969 as Kulturpark Planterwald, it was the "only constant entertainment park in the GDR, and the only such park in either East or West Berlin". However, the Berlin Senate did not seem to have provided for enough parking space... which is quite silly, all things considered. Plus, the forest around the park was deemed to be doomed from the impact of visiting crowds. In any case, the socialist and then private owners were left with a bunch of debt and the place got suspended in limbo... But the story does not end there (read on).