The best way to get around Sintra in 2026 is by using the dedicated tourist bus 434 (The Pena Circuit) or the newer electric "Tuk-Tuks." Because Sintra is built on steep, narrow, and winding mountain roads, driving a rental car is highly discouraged and often restricted to residents only; parking is nearly non-existent near the major sites like Pena Palace or the Moorish Castle. The 434 bus departs regularly from the Sintra Train Station and loops through the historic center and the highest mountain peaks. For a more "private" and flexible experience, the electric Tuk-Tuks are popular in 2026, though they are more expensive. If you are physically fit, you can walk between the National Palace and Quinta da Regaleira, but the hike up to Pena Palace is exceptionally steep and takes about 45–60 minutes. Many savvy travelers now use the "Sintra Green Card," which includes the train from Lisbon and all the local bus transport, providing the most seamless and cost-effective way to navigate the UNESCO World Heritage site.