Vasco da Gama Bridge, Portugal - 56,381 feet: Lisbon's Vasco da Gama Bridge is the longest in Europe, spanning a total distance of 10.7 miles. Taking three years to complete, the bridge opened for traffic in 1998 to celebrate the 500th anniversary of Vasco da Gama's discovery of the maritime route from Europe to India.
A type of wave that can travel through empty space as well as through matter is electromagnetic wave.
Electromagnetic waves: 1. Electromagnetic (EM) waves (example light waves, radio waves, x-rays etc) can travel through vacuum; they do not require any medium (matter) to travel through and their travel is reduced, to some extent, by the presence of any medium. The common examples of medium are glass, water, air etc.