Sintra looks like a fairytale come to life. Just a stone’s throw from the Atlantic Ocean, this region of granite mountains and verdant scenery has been a favored retreat for Portugal’s kings and queens for centuries. Today, the UNESCO-listed destination is home to a wealth of royal residences—from the candy-colored Pena National Palace (Palacio National de Pena) and the ruins of the 11th-century Castle of the Moors to the lavish Monserrate Palace and the Sintra National Palace, renowned for its extravagant azulejo tiles. Palace-hopping is the thing to do in Sintra—but don’t overlook its lush parks, monasteries, and museums.