The original Riverboxes™ Challenges and associated geocoins have been retired. Many thanks to all who participated in the original challenges! 

Mark your calendars for a new challenge and geocoins, coming April 9, 2022. Learn more about the reveal at

Explore and discover all 16 Riverboxes (artist-created vessels inspired by letterboxing and geocaching) placed throughout Dublin, Ohio parks. Passports are available for download at Collect all ink stamps and bring them to the April 9 event to earn a new geocoin!