The "Casa de Pedra" - the House of Stone - is one of the most unusual places in the city, and is to be found in the heart of the shanty town of Paraisopolis.
It is a magical place of archways peppered with stones, and walls covered with every kind of imaginable object from plates, cups, and statues, to typewriters and mobile phones.
It was built in a space of just 75 square metres (807 sq ft) and is eight metres (26ft) high.
http://news.bbc.co.uk/2/hi/7016930.stm