Santiago Calatreva was chosen to design the Zubizuri in Bilbao, Spain. It is a footbridge consisting of a curved glass walkway suspended by steel cables. Although beautiful, Calatreva has undergone much criticism for this bridge because of its impracticality. The city has a wet climate, which results in the glass deck of the bridge becoming very slippery. Eventually, the city had to compensate so many people who slipped on the bridge, they decided to build anti-slip treads to the bridge. However, these covered the lighting from underneath the bridge which was part of the bridge’s appeal.