Bir Tawil: the Land No One Wants

There are many places in the world where two nations claim the same piece of land, but here's one that the two bordering countries are rejecting. Bir Tawil is an 800-square-mile parcel of land along the borders of Egypt and Sudan, but neither country claims the land. In fact, both countries would rather the other claim it! It's a question of whether the nations honor an 1899 border line or a 1902 border, which is all explained at Now I Know. Link  -via the Presurfer