Cape Cod Baseball.

There is no better way to experience the nostalgic charm of a New England summer than catching a Harwich Mariners game at Whitehouse Field. As one of ten teams in the prestigious Cape Cod Baseball League—the premier collegiate summer league in the country—the Mariners showcase future Major League stars in a wonderfully low-key, community setting. There are no corporate skyboxes here; instead, locals and visitors park their lawn chairs along the baselines to watch exceptionally high-caliber baseball. The season is short and sweet, running from mid-June through early August, and the atmosphere is delightfully retro, complete with youth clinics and local concessions. For a true slice of Americana, time your visit for July 18, 2026, when Harwich hosts the league’s annual All-Star Game.