The Belem line and the oriente line were excellent The castle line had problem because the bus was small and had no seats and you must wait for the next bus 45 minutes General is a very good and helpful experience and I recommend it because you can see the best of the city Finally I’m very pleased that it had translation in Greek !

As of July 2021 there are 2 lines being operated, the (green) castle line, which takes you through the tight historic city center towards the castle of Sao Jorge in a smaller bus (around 40min to complete the round trip), and the open'top double decker (red) Belem line which takes you outward from Lisbon proper, to the municipality of Belem, showcasing the famous coastal defense tower and a momument to the age of discoveries (around and hour and 10 min to complete). In Belem, you can also visit St. Jeronimo's monastery, the tomb of Vasco da Gama and the Maritime Museum. The audio guide is very informative and easy to understand, with pleasant intermissions featuring the local Fado music. For an additional charge of 12 EUR per person we booked the boat tour between Lisbon center and Belem as well. When we took the tour, it was quite empty, sometimes we were the only people on the bus, no doubt because of the Covid measures in Portugal scaring off foreign tourists, which is a shame!

The only good thing is that you jave the chance to see a lot in less time that any other eay. I bought ticket for 3 buses but find the time to use it for Cascais. In the winter it's difficult,since there are only 2 routes the day. And the stops should be more recognised. Example:at Belem there wasn't any sign for the bus stop. They should fix the plugs,lots of them weren't working.