Bridge of Segovia

Source: travel.sina.com.cn

The Bridge of Segovia spans across the Manzanares river, and is the oldest bridge in Madrid, built in the 16th century. Standing on the bridge can offer you the best spot for viewing the Royal Palace and Almudena Cathedral. The water channel built in the first century, with two floors of arches, spanning 728 meters in total leading to the city, and the tallest arch on the first floor is as tall as 29 meters. What is most amazing is that you cannot detect any adhesives at any spots of them.