Our first stop in Peru was just behind the Bolivian boarder in Puno. I had heard about the floating reed island of the Uros and wanted to visit them.
They were just a short boat ride away, kind of touristy, but fascinating. You just have to take the evening tour (significantly less tourist) and then imagine, that people lived like that for thousands of years. Anyway, nowadays the also incorporate modern material like corrugated iron for their roofs, but the swimming floor is still made of floating reed roots and carpet and walls of dried reed.
The other big attraction despite the huge street marked in front of our hostal was the big supermarket, that we found in the city (finally able to stroll through aisles of products after shopping around between piled fruits and vegetables for five weeks).