Islamic Interpretation of Dreams (Ibn-i Sirin):

(Cupola; Minaret; Observatory) In a dream, a watchtower represents a notable person.

Seeing a watchtower from a distance in a dream means victory over one’s adversary, attainment of one’s goals, rising in rank, or it could mean happiness.

If a merchant sees a watchtower in a dream, it means prosperity, presiding over his fellow merchants and gaining power. Building a watchtower in a dream has the same interpretation as building an edifice or a house.