In the heart of the old Jewish neighbourhood stands the Portuguese Synagogue. The biggest synagogue in the world when it was built in the 17th century. Jews still worship here to this day, but whenever this wonderful building isn’t being used for services it’s open for you to visit. Everyone is welcome. Whether you’re Jewish or not. A visit to the Portuguese Synagogue is a breathtaking experience. Everything has been kept just as it was in the 17th century. Instead of electric lights, the synagogue is lit by hundreds of candles.