About 800 thousand people.

La Plata is a planned city near Buenos Aires, built on a neat square grid with diagonal streets. It is a center of learning with a famous university and a wonderful natural history museum.
You can marvel at dinosaur skeletons in the La Plata Museum, see the giant neo-gothic cathedral, and walk through the pretty Paseo del Bosque park with its little zoo and lake.
The La Plata Natural History Museum is one of the most important in South America, full of dinosaur bones and ancient fossils.
The whole city is laid out like a perfect square with diagonal streets, so from above it looks like a giant board game.