While many tourists visit Sintra as a day trip from Lisbon, one night in Sintra is highly recommended and often considered the minimum to truly experience the town's magic. Spending the night allows you to visit the most popular sites, like the Pena Palace and Quinta da Regaleira, early in the morning before the massive tour bus crowds arrive from the capital. By 2026, Sintra has become even busier, making the quiet evening and early morning hours the only time to enjoy its misty, fairytale atmosphere in peace. A two-day (one-night) itinerary gives you the luxury of time to explore "hidden" gems like the Monserrate Palace or the Capuchos Convent, which day-trippers usually skip. It also allows you to enjoy a romantic dinner in the historic center after the "day crowd" has departed. If you only spend a day, you will likely feel rushed and only manage to "tick off" two of the six major palaces, missing the intimate charm that makes this UNESCO World Heritage site so unique.