Portugal’s brochure-ready sandy beaches are both its greatest blessing and something of a curse. The country’s Mediterranean coastline has been blighted in parts by mass development, but there are still secret coves and rolling sand dunes where you can soak up the sunshine in peace. Venture away from the popular Algarve region and you enter a completely different world. Walking trails run for hundreds of miles along wave-lashed Atlantic cliffs, medieval castles stand guard over rolling vineyards and rustic village cafés serve up sizzling seafood stews. Porto and Lisbon overflow with galleries, heritage buildings and fabulous restaurants, while the countryside is dotted with Unesco World Heritage Sites. With a stellar collection of hot baths and five-star spas, this is also the perfect place to enjoy some serious R&R.