Can't make up your mind between Lisbon and Porto? Go to both on a 2-city adventure for 4-6 nights Stay 2-3 nights in Lisbon at the Masa Hotel Almirante  Travel back through time at the Moorish Sao Jorge Castle which has served as a royal palace  Imagine discovers returning home and passing along the medieval Belem Tower Admire the Gothic architecture of the imposing Jeronimos Monastery Next, spend 2-3 nights in Porto at the Park Hotel Porto Gaia Visit the Livraria Lello to admire one of the most famous bookstores in the world Check out the traditional Portugeues tiling on the Church of Saint Ildefonso Treat yourself to some tasty delicacies in the Bolhão Market   London Flights  Stansted (STN), Gatwick (LGW) or Luton (LTN)    Regional Flights  Manchester (MAN) Jetline Holidays are ATOL Protected: 6153