Subic Bay's mix of tropical jungle, wartime history, and marine life makes for varied outings. The old-growth forest within the freeport zone is home to wild monkeys and good birdwatching trails. Wreck diving on World War II ships in the bay is a major draw for divers of every level. Family attractions like Zoobic Safari and Ocean Adventure draw weekend crowds from Manila, while history buffs will find plenty of traces of the American naval era scattered across the zone.