One of five rocket cones on a life-size model of a Saturn V rocket (the ones that propelled the Apollo program to the moon) standing outside the US Space & Rocket Center
in Huntsville, AL. This is a pretty cool museum for anybody who enjoys space. There are two Saturn V's at this place: the mock up pictured here outside the front entrance, and a real one lying on its side inside a building. They're bloody huge. The portion you see here is probably 8-10 feet tall.