Mobile application Trail Water, Industry and Crafts TeH2O in Bydgoszcz is a virtual cheering to search for new information about the city in the industrial, technical and historical optics. This is an independent guide to the catch in hand and set off on the trail of Bydgoszcz talking about people skills, craftsmanship and technology. Here we combine yesterday and today. Here we collect all Bydgoszcz industrial and cultural events.