Don't think there's a thread for this yet but perhaps we can start a list of the best/interesting events to the world. So far I have
- Oktober Fest in Munich, Germany
- Watching the chimney in Rome when picking a new Pope
- Carnivale in Rio de Janeiro, Brazil
- Correfoc (Fire Run) during the La Merce festival in Barcelona, Spain
- Holi festival (Festival of Colour?) in India
- Northern (Norway) or Southern lights (Tasmania, Australia) for photography (YMMV!)