The traffic is changing in Sintra!
During the day time (8am-7pm) the motorized traffic inside the Historic Center is only allowed to authorized vehicles of residents and merchants. Most all of the streets are now one-ways, and the center is very pedestrian and bicycle friendly!
As this is still a new situation, there are policemen in the key points of entry to the Historic Center, and many people feel obliged to stop and talk with the policemen - which slows the traffic down. As the signage gets more functional and more local people get used to the rules, the traffic will also flow better. As of yet, do not trust your GPS blindly - orient yourself through information you get from us as well. Here are a few screenshots of on-line GPSs, taken from the end of IC19, coming from Lisbon, to Casa do Valle. On the 1st of April, Google maps was not yet updated, but Via Michelin was!
The only way to drive to Casa do Valle, day or night, due to the one-way streets is passing the City Hall.
Let us know if you are bringing a car, and do remember that we have private parking should you need it!