Providencia's main draw is its reef — one of the most extensive barrier reefs in the Americas — and the snorkelling and diving are genuinely exceptional. Crab Cay is the most popular snorkelling spot: a small rocky islet just offshore surrounded by shallow coral gardens teeming with fish. The Old McBean Lagoon national park area protects the best stretches of reef.
On land, the hike up to El Pico (360 metres) is the most rewarding thing to do — a steep but well-marked trail through tropical forest that delivers panoramic views over the sea of seven colours. Fort Warwick on the hill above Santa Isabel is a small 18th-century English fortification with good views and a slice of the island's complicated colonial history.
The island's beaches are beautiful but not the primary attraction — the water is where Providencia shines.