i would imagine structures like the burg kalifa in that desert and many other large concrete structure's will remain after a few thousand years, degraded yes, but still there standing like monoliths in a wilderness, striking wonder in a foreign travelers path
Like the Statue of Liberty's arm in Planet of the Apes.
Also, would like to see that pic you posted larger. I didn't realize the Eiffel tower was taller than (the tallest?) a pyramid. Assuming that is a big pyramid and not some starter model.