Architectural engineers have created some amazing structures in this world but the Veluwemeer Aqueduct in the Netherlands is truly the best. Most aqueducts are basically bridges that are built above water. But the Veluwemeer Aqueduct is a bridge for the passing ships while those driving in cars go through a tunnel underneath the bridge. In other words, it is an underwater tunnel where the ships sail on the top and the cars travel underneath it. That way traffic jams can be avoided because cars no longer have to wait for boats to pass by anymore.