The Alamillo Bridge in Seville (Spain) is a cable-stayed bridge with a counterweight pylon that crosses the River Guadalquivir. It was designed by Santiago Calatrava and finished in 1992. It was built as an access to the Isla de la Cartuja, where the Expo '92 took place, and where today the Isla Mágica theme park, the Cartuja Science and Technology Park, the hundred-year-old monastery of La Cartuja, after which the island is named, and the Alamillo park are located.
The bridge consists of a single pillar that acts as a counterweight for the 200 m of the bridge thanks to thirteen long cables. The Sundial Bridge, also made by Calatrava has a similar design, and was completed in 2004 in Redding, California.
The bridge does not have tie-rods (there are only tie-rods on one side of the tower), making it the first cable-stayed bridge that does not have this band of tie-rods so that the forces received by the tie-rods on one side of the tower are not collected.
The top of the bridge serves as a lookout point, is known as "the eye of the horse's head" and is not open to the public. Then. it became one of the most emblematic works of Seville.