Puerto de Oro (Port of Gold) is an island in Tropico 4. Unique among the islands, Puerto de Oro starts with no garage, farms, tenement, or even roads. Instead, three bunkhouses serve as housing and two fisherman's wharves supply fish for food. The island itself is also odd, being covered in strange spiral-shaped markings and featuring three perfectly circular areas that are remarkably ideal places to grow sugar. The island also features a volcano, a colonial fort, and two sets of ancient ruins; one in the middle of a ring of stone huts and the other near a ring of broken pillars.