The best place to start a visit to Zaragoza is the Stone Bridge, the oldest bridge that crosses the Ebro River and whose origins date back to the founding of the city, 2000 years ago.
It is approximately 225 meters long and is built with the help of seven arches, although one of them, the closest to the old town, was buried years ago under the Paseo Echegaray y Caballero, next to the Lonja.
In the place where the Stone Bridge is located, there was already one in Roman times. It coincided with the extension of Cardo Maximus (currently Calle Jaime I), in front of one of the main gates of the city and served both as a bridge and an aqueduct.
We are not in a position to say for sure what material it was built of (it is suspected that it could have been a bridge with stone pillars and a wooden deck), but we do know that a bridge was already being built in the first century in the place where the current one is today, otherwise Caesaraugusta would not have gained the importance it had if it had not served as an access point to the northeast of Hispania.