A fun and scenic attraction in Memphis is riding aboard a steamboat. Memphis Riverboats offers a 90 minute sightseeing tour and a two hour dinner cruise. Both adventures launch from Cobblestone Landing on Riverside Drive near the center of downtown. On the other side of the Wolf River Harbor is the Mud Island Amphitheater (right corner). The 5,000 seat outdoor amphitheater sponsors regular summer concerts. Next door is the Mississippi River Museum. The exhibits tell the ten millennium history of the Lower Mississippi River Valley in 18 interesting galleries. In the background is the Hernando de Soto Bridge. The double arch of the half-mile cable-stayed span earned it the nickname The M Bridge.