* A portion of Rick Riordan's novel ''The House of Hades'' is set in Valletta; here Jason Grace, Nico di Angelo, Piper McLean, Hazel Levesque and Frank Zhang reunite with their comrade Leo Valdez after Jason pilots their ship from the palace of Notus, god of the south wind, on the North African coast on a fast trip with Notus' storm spirits bound to the prow.