DE - Weilerswist - Burg Kühlseggen TR - Istanbul - Sultan Ahmed Mosque TR - Istanbul - Obelisk of Theodosius TR - Istanbul - Sultan Ahmed Mosque TR - Istanbul - Sultan Ahmed Mosque TR - Istanbul - Hagia Sofia TR - Istanbul - Hagia Sofia TR - Istanbul - Hagia Sofia TR - Istanbul - Hagia Sofia TR - Istanbul - Yerebatan cisterne TR - Istanbul - Gülhane Park TR - Istanbul - View across the Bosporus TR - Istanbul - Theodosian wall TR - Istanbul - Theodosian wall TR - Istanbul - Avcılar TR - Istanbul - Avcılar TR - Istanbul - View across the Bosporus TR - Istanbul - Marble vase at Hagia Sofia TR - Istanbul - Yerebatan cisterne TR - Istanbul - Gülhane Park TR - Istanbul - Gülhane Park DE - Mirbach - Church of our Saviour DE - Mürlenbach - View towards Bertradaburg DE - Heimbach - Jugendstil-Kraftwerk DE - Dernau - Panoramic view from the vineyards DE - Heimbach - Hello! DE - Brühl - Schloss Augustusburg DE - Brühl - Schloss Augustusburg DE - Brühl - Schloss Augustusburg DE - Brühl - Schloss Augustusburg DE - Brühl - Schloss Augustusburg DE - Brühl - Schloss Augustusburg DE - Marienthal - Former monastery DE - Dernau - me, on the red wine trail DE - Dernau - On the red wine trail DE - Rech - View from the vineyards DE - Weilerswist - Burg Kühlseggen DE - Heimbach DE - Rheinbach - Tomburg ruins DE - Rheinbach - Tomburg ruins DE - Rheinbach DE - Rheinbach DE - Rheinbach - Waldkapelle DE - Volkesfeld - Heidehimmel trail DE - Volkesfeld - Heidehimmel trail