TIL the first European colonial outpost was the town of Ribeira Grande (now Cidade Velha) founded in 1462 by Portugal, six years after they discovered Cabo Verde.

https://whc.unesco.org/en/news/527#:~:text=The%20town%20of%20Ribeira%20Grande,colonial%20outpost%20in%20the%20tropics.

https://www.reddit.com/r/todayilearned/comments/1551i87/til_the_first_european_colonial_outpost_was_the/