I remember waking up on a hostel roof top in Spain. The hostel was full, so the manager let us sleep on the roof for free. It was a great view of Madrid. I sat up there with a mate I was travelling with, laughing. Drinking wine. We had to get up early to walk to the bus station the next morning.
I love Europe in the morning. It's wonderfully quiet and empty. You can really absorb the world around you without distraction.