Two of the monasteries in the Meteora area of Greece. This area is one of the most spectacular sites I've seen in my travels. There are five functioning monasteries now but there used to be more and you can still see the ruins perched on these cliffs. The rock formations are amazing as well. The monks used to have to bring supplies and members into the monasteries via a rope and pulley system. In some of the monasteries they have relics supposedly going back to the 5th century a.d.