RheinBüdchen" kiosk RheinBüdchen" kiosk Drinks | Snacks | Souvenirs | Tickets | Events At our listed RheinBüdchen, the only kiosk on Cologne's Rhine promenade, you will find a wide selection of snacks, drinks and souvenirs.Opening hours (weather permitting):Monday: 11:00 to 16:00Tuesday: closedWednesday, Thursday & Friday: 11:00 to 19:00Saturday & Sunday: 10:30 to 21:00 Under construction: Impressions of the conversion phase