Wplace uses a world map as a canvas. Zoom in to where you live and paint with pixels, or just gander at what others’ masterpieces (given technical difficulties, it seems you can only look for now).
If this looks familiar, Wplace is based on r/place from 2017, when Reddit released a canvas that anyone could draw a pixel on every few minutes. Wplace is like that but in a geographic space and no battles for pixel space.