A wooden bridge covered with weed in the forest gives a feeling of wildness and freedom at the Taohua (peach blossom) Valley of Mount Tai in Tai'an, Shandong province. [Photo/WeChat account: SDTXTA]

The Tianwai (from outer space) Bridge is a single arch stone structure over the Xixi Stream in Tai'an, Shandong province; its name is from the adjacent Tianwai Village. [Photo/WeChat account: SDTXTA]