Saint Denis is even smaller than the VC Golf Course
I think everyone that has played RDR2 can relate to that moment when first arriving in Saint Denis, which feels like a giant city from a totally different era compared to the likes of Valentine or Rhodes. Pretty much a modern city, densely built with dozens of streets and buildings as well as many enterable shops and homes to explore. Personally, even after weeks and months of finishing the game, it still felt like every time I walked through the streets, that I came across something new and exciting. Comparing the size of Saint Denis with the GTAVI map created by the mapping project shows tha