Trier & the region in one app - digital, smart, innovative: shopping & gastronomy, city services such as VRT, parking, SWT, e-car shops & tourism - for the whole family Portazon connects you with companies, retailers, restaurateurs and service providers from Trier and the region. With the Smart City Super App, you can experience completely new product and service offerings and carry out your everyday tasks easily and conveniently via your smartphone. Download the app now for free and convince