Rossio Square
Pena Palace
Port Wine Cellars
Venice of Portugal
University of Coimbra
Surfing beach
Convent of Christ
Chapel of Bones
Blue Flag Beaches
Ponta da Piedade
Praia da Rocha
Old Town
Boca do Inferno
Belem Tower
If you have more time, consider adding a day trip to Braga or Guimarães from Porto. If you have less time, you can skip Nazaré and Tomar and spend an extra day in Lisbon or Porto. Make sure to check the opening and closing times of each location to avoid disappointment.