Portugal has a staggering (for its size) 17 UNESCO World Heritage Sites. The majority of these are in and around Lisbon and Porto, and we can arrange tours or share suggestions on how to visit them. Also take a look at the Portugal's Tentative Sites list. You will find many natural and architectural sites that hope to receive UNESCO-protected status, such as the intact nature of the Algarve region or the modern architectural heritage of Álvaro Siza.