Rihanna at 1st Mariner

EntertainmentBarry ManilowRihanna1st Mariner Arena
The R&B superstar will bring her "Diamonds" tour to Baltimore's 1st Mariner Arena on March 12 -- one of many shows that undoubtedly will be playing the arena, which was recently rated one of the Top 10 live entertainment venues for its size (10,001-15,000) by Billboard magazine. Other announced... Simone Joyner, Getty Images