Citygem
Audio-guided tours
The 100% free app that encourages you to get moving by helping you (re)discover the wonders around you.
OTBB is partnering with the Citygem app to offer you the opportunity to (re)discover the treasures of Boulogne-Billancourt with an audio guide.
CITYGEM
The 100% free app that encourages you to get moving by helping you (re)discover the wonders around you.
L’OTBB s’associe à l’application Citygem pour vous proposer de (re)découvrir les richesses de Boulogne-Billancourt en audio-guide.
HISTORICAL AND CULTURAL TRAILS
Four routes have already been created on the Citygem app, and others will soon be added to the list:
- Boulogne and the 1930s, in 2 parts
(approximately 1 hour 30 minutes on foot in total) - Boulogne and its industrial heritage, in 2 parts (approximately 2 hours and 24 minutes on foot in total)
- Discovering the quartier du Trapèze
(approximately 1 hour 16 minutes on foot) - Vélib’ : Boulogne-Billancourt, les années folles
(approximately 35 minutes by bike)
PARCOURS HISTORIQUES &CULTURELS
Déjà quatre parcours sont créés sur l’application Citygem, d’autres viendront rapidement s’ajouter à la liste :
- Boulogne and the 1930s, in 2 parts
(approximately 1 hour 30 minutes on foot in total) - Boulogne and its industrial heritage, in 2 parts (approximately 2 hours and 24 minutes on foot in total)
- Discovering the quartier du Trapèze
(approximately 1 hour 16 minutes on foot) - Vélib’ : Boulogne-Billancourt, les années folles
(approximately 35 minutes by bike)




