One of the most unusual parts of our trip to Peru was our homestay on the Uros Islands, a group of eighty floating, man-made islands constructed out of reeds. The Uros people lived in the middle of Lake Titicaca, where they could defend their homes from the Incans. Each island is anchored in place with a rock, but when the rock is rolled off the island, it can float anywhere in Lake Titicaca, which expands into both Peru and Bolivia.
When I first stepped onto the island, I felt the reeds bounce underneath my feet. It was definitely an unsettling feeling knowing I was not on firm land, but on what is essentially a giant raft. Our host father reassured us that the reeds are piled on three or four feet thick, so there is no danger of falling through!
Kate Travels the World 