One of Portugal's most picturesque towns, Sintra, is the home of the 19th century Monserrate Palace, originally built as a summer residence.
Along with the beautiful gardens, it's been open to the public since 2000, and is known for its eclectic mix of Indian, Arabic and Gothic architectural features. The interior is worth visiting for its intricate stonework, its kitchen which featured the latest technology when built, and the Music Hall with its excellent acoustics.
Outside, the lush and peaceful gardens feature grottoes and fountains, a lake and a 7 meter high totem pole. The palace makes a popular stop on many day trips from Lisbon.