For at least a few times already, all of our planet’s dry bits have come together to form a single, giant island in a single, giant sea. Roughly 200 million years ago, Pangaea was the last iteration of this recurring supercontinent.

That deep history will repeat itself. In another 250 million years, we’ll have the next supercontinent. We’ve already got the name: Pangaea Proxima.
Here’s what our world will look like at that time: the Americas attached to Africa in the north and Antarctica in the south; Africa slammed into Europe and the Middle East; and Australia welded to Asia’s east.
The giant continent is centred around the remains of the Indian Ocean, the former Mediterranean, with a boot-like India posing as a replacement Italy.

It’s unlikely that there will be any humans around to witness the reunification of the world’s land masses – we’ll be lucky to survive the next century – but the map includes some present-day cities nevertheless, for your orientation.