Enjoy a 70 minute sightseeing tour on the Charles River with these tickets from the Charles Riverboat Company.  Passes are valid only for regularly scheduled Charles River Tours departing from the CambridgeSide Mall in Cambridge. For the 2019 season, the cruises sail daily from May 11 - October 14 at 10 am, 11:30 am, 1:00 pm, 2:30 pm or 4:00 pm. Reservations are not accepted with these tickets and passes must be exchanged for a boarding pass at the ticket booth prior to boarding.  Valid only for the Charles River Tours. For more information, visit www.charlesriverboat.com/tours/charles-river-tours.