The 434 bus route is the best way to travel up the Pena Palace from Sintra train station. The bus follows a one-directional loop that departs from the Sintra train station and heads up the hill to the Moorish Castle and Pena Palace, before returning to the train station via the historic centre of Sintra.

To reach the Pena Palace from the Sintra train station in 2026, you should take the Scotturb Bus 434 (Circuito da Pena). This is a dedicated tourist loop that departs frequently from just outside the station. The bus follows a one-way route: Sintra Station -> Historic Center -> Moorish Castle -> Pena Palace -> Sintra Station. A one-way ticket is roughly €4.10, but most travelers opt for the 24-hour hop-on-hop-off ticket (approx. €13.50), which allows you to visit multiple sites. In 2026, it is highly discouraged to drive to the palace, as the narrow, winding roads are often closed to private vehicles to manage congestion, and parking at the top is virtually non-existent. Be prepared for long lines during peak hours; taking one of the first buses of the morning (around 9:00 AM) is the best strategy to beat the crowds and ensure you have enough time to explore the palace terraces and interior.