Flowers blooming, jackets tossed. Long walks and al fresco lunches. These are just a few things that make springtime the best time of year. Another one of the best parts of Spring is that it also makes you get excited to plan an extended vacation, one where you'll want to check out a new city mostly on foot. From the Spring equinox in Mexico to the colorful Holi festival in India, these international Spring festivals are sure to provide an unforgettable experience.