Having fun is a big part of Thai culture, and having fun amidst scorching heat is no exception. The hottest month of the year, April sees the entire country go bananas in friendly water fights and street parties that last nearly a week. During Songkran, most office buildings, banks as well as family-run shops and restaurants shut down completely, while big shopping malls usually remain open. Bangkok experiences a mass exodus, as at least half of its residents travel back to their home towns for family re-unions. In their place are tourists, who fly into Bangkok particularly to enjoy one of the most colourful and festive times of the year.