Error! You must have javascript enabled to use this form. Please enable Javascript in your browser. Colonia Aktiv Unveils Guided Sightseeing Bike Tours in Cologne Colonia Aktiv has announced its guided sightseeing tours in Cologne that can be a brilliant way to soak in the amazing architecture and cool vibe of the city. View full press release Your Name: Your Email: To Email: To BCC: Subject: Comments: We respects your privacy, the information you entered above will not be used to send unsolicited email, and will not be rented or sold to a 3rd party. Your contact information will be shared with the recipient of this message - Privacy Policy Send