Preguiças Lighthouse, Maritime navigation aid in Mandacaru, Brazil.

Preguiças Lighthouse is a white truncated conical concrete tower with four black bands and four ribs, topped by a double gallery. It stands in the village of Mandacaru, on the banks of the Preguiças River at the edge of the Lençóis Maranhenses National Park.

The lighthouse was inaugurated in 1940 at the mouth of the Preguiças River, in the village of Mandacaru. It is administered by the Brazilian Navy and remains inhabited today. The sources record no details about its original optical equipment.

The lighthouse stands in Mandacaru, a fishing village at the mouth of the Preguiças River, and is still inhabited. Its other name, Mandacaru Lighthouse, comes from that village. Visitors reach it by boat from Barreirinhas, the nearest town and district seat.

You can reach the lighthouse by taking a boat from Barreirinhas on scheduled days throughout the week. Wear light clothing and bring sun protection, as the tropical sun is strong and exposure during river travel is unavoidable.

The lighthouse stands in the village of Mandacaru, at the mouth of the Preguiças River, inside Lençóis Maranhenses National Park. Its tower is white with four black bands and four ribs, and it has a double gallery. The nearest town is Barreirinhas, seat of the municipality of the same name.