Carristur is a Portuguese company operating under the brand Yellow Bus Tours, which offers high-quality regular tours in 4 of the most beautiful cities in Portugal: Lisbon, Porto, Funchal and Braga. We provide hop-on hop-off tours in panoramic double-decker buses in all the cities mentioned before, historical and exclusive tramcar tours through the narrow streets of Lisbon and a Yellow Boat tour on Tagus River, Lisbon.