Go for the craziest New Year's Eve experience in Cusco in the South of Peru.The best spot to celebrate is in the Plaza de Armas (main square) and most hotels/hostels are within walking distance.Its free to attend and the streets get busy from early evening as its dark from around 7pm.It can be quite cold on an evening so make sure you are wrapped up warm, that said, there is a tradition on new years eve that if you wear yellow underwear underneath your clothes you will have good sex all year and if you wear over your clothes you will get lucky that night!!! So expect to see lots of people doing laps of the main square in yellow underwear after midnight!!By around 11.30pm everyone is in the main square waiting and at midnight it goes crazy and everyone is letting off fireworks anywhere they can find a tiny space!!It's safer to be in the middle of the crowd and not near the edge, though a stray firework managed to burn down the nativity scene when I was there!!It's a lot of fun and one of the best places in the world to celebrate New Year's Eve.