City: Frederick, MD

Category: Spectator Sports

Telephone: (301) 662-0013, (877) 8GOKEYS

Address: 21 Stadium Drive

Description: The Orioles’ Class A affiliate, the Keys compete in the Carolina League, which includes the rival Cannons. Fans have watched the likes of Brady Anderson, Armando Benitez, and David Segui before they were stars. Children ages 5 and younger get in free, and so do kids ages 12 and younger who wear their Little League shirts and caps. Popular promotions, such as fireworks nights, sell out in advance. The Junior Keys Club (membership fee applies), for kids ages 12 and younger, includes a T-shirt and free admission to Sunday games.