After a short transfer from Bangkok, you explore the ruins of the impressive Ayutthaya Historical Park, featured on the UNESCO list of World Heritage sites since 1991. Its distinct reputation is well earned--weathered layers of burnt bricks compose the stately stupas and chedis that guard these grounds. First, we'll see Wat Yai Chaimongkol and its towering chedi, one so large that it presently is sinking. Then, biking through the ancient city's walls, you'll visit Wat Phra Mahatat, the symbolic heart of the old city now famed for the picturesque tree roots that ensnarl its imbedded Buddha relic. Fruitful jujube trees still surround the Old Royal Palace, our next stop. From there you'll have time to continue exploring these precarious, precious structures, including the prominent Wat Chaiwattanaram. After that you escape into the Thai countryside on back roads that parallel the Chao Phraya River and ride through quaint villages until our trail meets a river ferry. After crossing, you lunch at the riverside restaurant there. It's back on the bikes then for a visit to Wat Niwet Thamapra, a unique gothic-style temple erected on a river island. From there, it's a short walk to the Thai kings' grandiose summer palace. A pleasant ride with rich cultural interest, this tour is great for the sightseer, as well as families.