Black, gumdrop/bell shaped object sighted over downtown San Antonio, TXI was 21, working as a valet driver at a downtown hotel in San Antonio, TX. It was a slower day and I was parking a vehicle behind the hotel in the parking lot. As I was walking I was looking up across the top of the hotel for a hawk that usually picks off pigeons and stuff. I then noticed an object, not directly above the hotel, but from my line of sight I can surmount that it was just a little bit further out over the city. The first thing that popped in my mind was that it looked as if someone had placed a black gumdrop in the sky. I am a college student and I know what things are, this was no helicopter or anything that could have been produced with our current technology. It was clear as day right before my eyes, almost as if I could reach out and grab it. I attempted to take a picture with my phone but could not get a distinguishable shot. From what I could see there were no openings, lights, windows, or protrusions of any kind; just a solid be! ll/gumdrop shaped object. There were cirrus clouds that day so I was able to gauge if it was moving, it wasn't. I watched it for about 3-5 minutes then I ran inside, down to the maintenance room to see if the engineering guys had any binoculars. There weren't any so I ran back up to the front to see if any guests had arrived, everything was clear so I immediately ran to the back again because the sun and trees obscured my vision in the front. When I got back, I searched for it and was able to find it again, still there not moving. Total time elapsed so far would of been about 8 minutes. I watched it for another 2 or so minutes until I was interrupted by my radio that a guest needed assistance in the front. When I was done with that I ran back again only to find nothing there that time. I waited for a few minutes watching the sky around me but could not find it. When this was over I went back to the front and about ten minutes later I noticed a very high altitude je! t going over, heading roughly north to south. Then after that! one had passed, about 5 minutes later, another high altitude jet flew south to north. I hadn't seen anything like that fly over all day, so if it was a coincidence then it was perfect timing.((NUFORC Note: Witness indicates that date is approximate. PD))