Rising up from a thickly wooded peak and often enshrouded in swirling mist, Palácio Nacional da Pena (Portugal) is a wacky confection of onion domes, Moorish keyhole gates, writhing stone snakes and crenellated towers in pinks and lemons. .. Read more: http://www.lonelyplanet.com/portugal/lisbon/sintra/sights/castles-palaces-mansions/palacio-nacional-da-pena#ixzz3OoWMyEfK
If you’re feeling energetic, go to Linhares where you can have a go at paragliding. For natural swimming pools try the Serra da Lousã and the Serra do Açor. And for peaceful footpaths visit the Serra do Caramulo.