Sintra is a fairytale-esque town in Portugal and a popular day trip destination for travelers visiting Lisbon. In 1995 it was designated a UNESCO World Heritage Site for its incredible cultural landscape and architecture. Of the many stunning landmarks in Sintra is the Castle of the Moors which was built in the 8th & 9th centuries and once served as an important strategic military site. Because it sits high up in the Sintra Mountains, it offers an unobstructed panoramic view across Sintra – below it is the Sintra National Palace (pictured here) and to the south, you can even catch a glimpse of the far away red, yellow and purple Pena Palace. Today it is possible to pay a small fee to walk along the castle walls: the Castle of the Moors is not to be missed if you are heading to Sintra!