Colorado National Monument, Colorado, USA. It's actually more blade- or fin-shaped than tower-shaped; we're looking almost along the long axis here. It's a tradition, going back to John Otto, who was instrumental in getting the monument established shortly after the turn of the last century, to raise an American flag on top on July 4th. It's a heavy-duty technical climb involving direct aid right at the top to get around that overhang! Because it's there, I guess--
Looking north out over Grand Valley; the Colorado River is visible behind the rock toward the top, as is Interstate 70. The mountains on the skyline are the Book Cliiffs. The buildings visible are in the outskirts of Grand Junction, CO.