In many of the ancient cathedrals that we visited in Italy the walls or ceilings were covered in mosiacs. A mosiacs is a "picture "created using tiny tiles. These tiles never fade over time like paint might, so they are in their original beauty even thousands of years later
This is the leaning tower of Pisa. It was amazing to be there. It was a beautiful day and there were lots of vendors selling LV purses and other designer knock-offs.
This of course is the Collusium, in Athens, Greece. This building was built before Christ and it was amazing to see how huge it was. You can see that below the ground level there were rooms where the animals were kept, people lived, and the gladiators stayed before they were brought up on a lift to fight on the floor of the collusium.
This was one of the walls of the Sistine Chapel. The walls and ceiling were recently cleaned and restored, and they left a couple of dark squares so one can see how dirty and black it had become over the centuries. It was a remarkable experience to visit the Vatican and see these masterpieces done by Michelangelo. This wall is a representation of what happens to the spirit after death. I wish you could see in in detail.