I had a magical day on the Curonian Spit in Lithuania a few years back. Perhaps you’ve never heard of the Curonian Spit – I certainly hadn’t – but it’s a funny skinny bit of land running through the Baltic Sea, half of it belongs to Lithuania, and half of it is Kaliningrad, a tiny piece of Russia which is unconnected to the rest of Russia (strange, hey!).
It was a day with a bit of everything – a film crew were working on a movie in the sand dunes, I played mini-golf on a slightly overgrown outdoor course, I watched a rather wrinkly woman go skinny-dipping in the Baltic Sea, and I saw sailing ships like this. All in all, a highly recommended spot.