Fort Warwick sits on Santa Catalina island, connected to Providencia by a small pedestrian bridge known as the Bridge of Union. The fort dates from the early 18th century when English-speaking settlers controlled the island, and its cannons once commanded the channel between the two islands. The English presence here gives Providencia its distinctive Caribbean character — far more Jamaican in feel than Colombian.
The fort is small and partially ruined, but the hilltop location is excellent and the walk up through Santa Catalina's quiet lanes is pleasant in itself. From the battlements you get good views back over Providencia's main bay and north toward the open sea. Santa Catalina island has a handful of small restaurants and guesthouses that make it a quieter alternative base to the main island.