-What you can expect- Explore the Pena Palace and Park on your own with this audio-guided tour available on your smartphone, including entrance tickets. This picture-perfect mountain retreat was a monastery until transformed into a private palace by King Ferdinand II. The surrounding Park of Pena is just as big of a treat, full of exotic plant life and other secret treasures. Discover for yourself the 'Crown of the Sintra region'. Originally a 16th-century monastery, Ferdinand threw out all notions of restraint and ordered its conversion into a Technicolor fairy-tale fortress. The King couldn't settle on a single style, so the castle is a delightful mishmash of Romantic, Renaissance, Manueline and Moorish styles. A must-see for fans of architecture and design (and bright colors)!