Alcántara Bridge
Alcántara Bridge (also called Puente Trajan at Alcantara) is a Roman stone arch bridge. It was built over the Tagus River, Alcántara, Spain between 104 and 106 AD. The Roman emperor Trajan ordered this bridge built in 98 AD. The Alcántara Bridge was built at the expense of 12 local municipalities in Lusitania. The names were added on an inscription on the archway over the central pier.