One mile NW of Gaios,Paxos,Corfu,Greece. Large white cigar shaped object at high altitude. Possibly three times the length of a regular passenger jet and travelling north at a speed of between 800-1000 mph. Roughly 35,000 ft high. It left no contrails, and reflected sunlight.It had no wings at all. I was able to get a closer look using a basic pair of binoculars and believe both ends of the 'cigar' were rounded. No navigation lights of any sort.I was unable to regain sight of the 'cigar' after it disapeared behind chimney smoke from a neighboring villa. As though it just vanished into nowhere?((NUFORC Note: Witness elects to remain totally anonymous; provides no contact information. PD))