The most important tip in Peru is: haggle! When taking a taxi, choosing a package tour, going shopping and eating out. They start with prices for European tourists and then ask how much you want to pay. I did not think the weather would change so suddenly, neither that the sun would be so hot this time of the year (May).
Islands in Lake TITICACA (navigable lake with the highest altitude in the world, 3827m), made of totora reeds. Very old communities live there and use totora as food, house, boats and handicrafts. The funny thing is that when families have an argument, they draw an imaginary line on the island and each group stays on one half.