Expanding over 200 acres, Ancient Siam in Samut Prakan province, southeast of Bangkok, is reportedly the largest outdoor museum in the world. What's even more fascinating is its mind-boggling size is the shape of the museum, which is designed to resemble a "mini Thailand''. Stroll the giant open-air museum and lay your eyes on some of the painstakingly designed replicas of structures, sites, and attractions that can actually be found in the Southeast Asian country.