If possible, try to visit Medellín in August, during the unique Festival de Flores, when the campesinos from Antioquia come to the city to display their flower designs. The weeklong celebrations feature a number of events, including an antique car parade, horse parade, and the grand finale, the flower float parade, where young and old alike display their flower designs in a 3- or 4-hour parade that also features dancers, singers, and performers. Be sure to book your plane ticket far in advance if you'll be in Medellín during this time. Midrange and budget hotels sometimes won't take advance reservations, so you might need to arrive early in the morning or book a higher-end hotel.