Cultural victory at 1842 AD. The game designates me the title Augustus Cäsar but I don't think it was too hard.
It took much longer than I had predicted though. Main reason is that there was no religious spread from the outside world. I had 9 cities on my small continent and not temples everywhere. So only 2 cathedrals from Confu and Philo each that I had to spread over my 3 chosen cities. No copper here to build them faster. AND.... I completely forgot to go Radio, also because the war situation was quite unstable and I wanted at least rifleman in my coastal cities. With a strong economy I could go 100% culture for many years while building culture in the 3 cities. So in conclusion: Parth and S. Chapel are strong wonders, but 3 or 4 religions plus broadcast towers are even more important.
Thanks god only one of my legendary cities was coastal. In the last turn before the 3rd city reached Legendary status, the top dog declared on me (even if he had declared on someone else the turn before!) and took instantly my legendary coastal city. The turn after, my 3rd city reached 50K culture and I had luckily some cannons and rifles to take the other city back. And still more luckily, the culture was preserved what surprised me a bit. I had expected to lose all my buildings and culture in there.
That seems to be usual AI behaviour to prevent someone from winning the game
So I won though he had a zillion transport ships in the oceans. Thanks for the map, really enjoyed that game. Next time I would definitely settle on another continent if only for a religious spread.
Btw, I was DOWed several times (maybe because of my religion) but the navy could prevent the worst and end the war very soon. It's funny, even when you scout the ocean very carefully, the AI always finds a little whole to sneak through and camp on a hill near one city.