Turn 278, 1814 AD Immortal science victory with the Aztecs.
Here's my city that built two of the three Mars projects.
Only had to go into wars twice after getting surprise declarations, otherwise the AIs mostly left me alone. Air units make late game war so much less painful. Making an airport to airlift units takes ridiculous amount of production though. I think I also countered like 40 spies because I had a ton of gold sitting around and everyone wanted a piece of it, by the end of the game it was like every other turn.
So cultural, science, and religious victories down. Maybe I'll go back to another cultural victory, venturing more into the great people and great works game. It seems like the main source of great people points are building the districts, and I haven't been building many districts in my games. Also the district projects are probably an important source of points, no idea how much they give though. I tried building Broadway and there was no theming bonus? There needs to be more information on the wonders.