Travelers are voting State Tower, Bang Na Expressway and Bhumibol Bridge as the best of 39 key buildings in Bangkok. There are 3 key buildings in Ayutthaya a city just 41 km from Bangkok and 1 key building in Phetchaburi which is 58 km distant. The most popular of these are Impact Muang Thong Thani in Ayutthaya and Hup Kraphong in Phetchaburi. You can find 41 key buildings in Central Thailand and 51 key buildings in the country of Thailand. Our members favorite in Central Thailand is Death Railway Bridge and Hup Kraphong is the top pick in Thailand. Want more? Check out our map of key buildings in Bangkok.