Lisbon's Ponte 25 de Abril suspension bridge closely resembles the Golden Gate Bridge in San Francesco. The comparison is correct as the consortium that constructed the American bridge also constructed Ponte 25 de Abril. Along with the similar appearances both bridges are located in regions of high possible seismic activity and their designs are almost identical. To ensure solid foundations of the Lisbon suspension bridge the south tower extends for 79m below the water level deep into the solid bed rock.
