This postcard was sent by Joaquim Costa and shows the Laurel Forest of Madeira, inscribed into the UNESCO World Heritage List in 1999.
From UNESCO: The Laurisilva of Madeira is an outstanding relict of a previously
widespread laurel forest type. It is the largest surviving area of
laurel forest and is believed to be 90% primary forest. It contains a
unique suite of plants and animals, including many endemic species such
as the Madeiran long-toed pigeon.