With 1900 years of seniority raises, majestic, one of top of Roman civil engineering works, pride of Extremadura.

This impressive masses granite is one of the wonders that Extremadura has in its interior. It is a splendid work of engineering and one of the more important bridges which were built in all the Roman Empire. It was built between years 105 and 106 before Christ, during the mandate of the emperor Trajano in the way which passed between Norba (Cáceres) and Conimbriga (Condeixa-a-Velha). Its rising was supported by 11 very interested Portuguese communes to communicate the two parts of the river, this is why it is a public work of the Roman state. Its construction was directed by Cayo Lucio Lacer, famous architect of the time (as it is composed in the reproduction of the inscription devoted to this one which is reproduced on the columns of the frontage of a close house, also Roman).

To save the Tajo river, the bridge of Alcántara has six arcs of a half - not supported by five granite pillars laid out with cables and "tizon" (placed to create longitudinally and transversely a more solid framework) which exceeds obstacle the 194 m length and a height which exceeds the 58 (they apply really their measurements). This important height was necessary to prevent that large the rising of Tajo manage to cover "their eyes" and to adapt to the level of the roadway. Six arcs, all of a half - not, rest on five pillars and two clamps. The central arcs are those of big size, the contiguous ones being of smaller width than those of the ends.

In his central part one raises the triumphal arch, in honour of the Roman imperial system, of style the simple just like Bridge and with weak decorative elements. The arch is of a half -, carried out with regular pillars and one not stuffed finer than in the Bridge. In this arc one gathers various commemorative inscriptions. One mentions with the 11 common natives who supported the expenses of the bridge.

One refers also to Trajano and the restoration carried for purpose during the reign of Isabel II after his destruction during the war of independence, like in the reform carried out during the mandate of Carlos V.

It is monumental together is supplemented by a small temple built with the entry of the bridge. After it has been conquered it was transformed into Christian hood, and one added martyrdom with sword and cross to him on the tympanum of the frontage. The reproduction of the inscription results from a great interest in that which appears the name of the author of the entire monumental unit and the dedication with all the gods of Rome and Cesar.

In the northern end of the Bridge of Alcántara, we find the Gold Tower, element of defence ordered by Carlos III in 1778.