First Diogo tweeted this picture, saying: "Adivinhem onde estou?" ("Guess where I am?")
A few hours later (and after several fans had guessed correctly), Diogo tweeted the below photo, saying: "Muito bem. Very good who said "Palacio da Pena" and "Castelo dos Mouros" in Sintra - Portugal. Love it."
(photos courtesy of Diogo Morgado on Twitter)
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