Most visitors to Maryland cannot resist spending time in Baltimore, which is often fondly referred to as Charm City. Baltimore's Inner Harbor, one of the city's main highlights, is flooded with water taxis, cruise boats and sailboats, all of which offer tours. Always bustling with locals, tourists and excitement, the Inner Harbor is one of the oldest seaports in the United States and is home to attractions such as the National Aquarium and the USS Constellation. A feature point of the Inner Harbor is Harborplace, a complex that consists of two malls side-by-side that are filled with dozens of shops and restaurants. Free performances are also offered at the Amphitheatre at Harborplace during the summer months. Depending on which season you are visiting, the Baltimore Orioles Baseball Club (March through October) or the Baltimore Ravens Football Club (September through December) are sure to make sports fans cheer.