What To See In Sintra

I’m planning a trip to Sintra, Portugal and I’m wondering what I should see while I’m there. I’m looking for a mix of cultural and historical sites, as well as some outdoor activities. I’m hoping to experience the best of what Sintra has to offer. I’m especially interested in seeing the Pena Palace, the Moorish Castle, and the Quinta da Regaleira. I’m also interested in exploring the lush forests and hiking trails in the area. I’m looking forward to experiencing the unique culture of Sintra, and I’m hoping to find some great restaurants and cafes to visit as well. Any advice or tips on what I should see in Sintra would be greatly appreciated.