Cape Cod Baseball League
Concierge.com's insider take:
The Cape Cod Baseball League is America's premier collegiate summer league and has been an incubator for some of the sport's top pro players since it was founded in 1885. Alumni include Mike Lowell, Mo Vaughn, Barry Zito, Nomar Garciaparra, Thurman Munson, Jason Varitek, "Buck" Showalter, Jacoby Ellsbury, and more than 200 players currently active in the major leagues. Visit the Web site for a schedule and directions—the teams play on municipal and public school fields between early June and mid-August—and bring a beach chair or blanket to watch the up-and-coming talent up close. Some teams ask for donations at the gate or pass a hat to pay for their expenses.