Puno is a port city at an altitude of over 3,800 meters, on the shores of Lake Titicaca on the Altiplano of Peru. In 2018, it had about 129,000 residents. Despite its picturesque hillside setting, the city is a ramshackle collection of mostly unfinished modern buildings – its biggest attraction is as a departure point for the famous floating islands on the Peruvian side of Lake Titicaca. This, and its proximity to the Bolivian border, means that it’s a regular stop on the South American tourist trail.