Post em São Miguel de Rio Torto, Santarém District, Portugal

Jeronimos Monastery, Carmo Convent, i really like Sintra too, its my favourite place :) there you have nature and culture. I highly recommend Quinta da Regaleira and Pena Palace,

From Porto to Lisbon I'd suggest the train OR airplane, I'd never do that by bus. I'm not sure about the train prices, and flights this close to the date are probably at a higher price, but they usually are around 15€ when booked in advance. That being said, my knowledge of Porto is 0. In Lisbon I think you should definitely visit the castle, it has a great view. There's also other high up spots with fantastic views, such as the Santa Justa Lift, the Rua Augusta Arch, and many parks that are free to visit near Avenida da Liberdade. Other than that, depends on what you like to do while travelling. I really like just walking around, and for that I'd suggest the downtown area (Baixa-Chiado), I never get tired of walking around there. I'd also check out Gulbenkian gardens, or even Eduardo VII park, if you enjoy green areas. To move around, most of what I talked about can be visited by just walking, as they are pretty close, but I think the Lisbon experience wouldn't be complete without the Elétrico, and possibly a Tuk Tuk? If you want to travel further in Lisbon you can get the metro, I think it's 6€ a day. I'm biased, but Setúbal is a beautiful city too, it's south from Lisbon, around 1h or so, you can get the train from Lisbon at around 5€. It has a castle near the river as well, so the views are stunning.

Many thanks for all your advice about Lisboa and Sintra

Hello! I would sugest train or flight. Besides Porto and Lisbon. You can go to Sintra, Gerês(nature) or Coimbra, and Aveiro. (They are between Porto and Lisbon) Coimbra have the oldest university um europe. And Aveiro is the Portuguese Veneza