The Holographic Gallery of the City of Lodz and its revitalized urbanized areas has been developed by Transition Technologies PSC in accordance to the Municipality’s requirements. In order to ensure a maximum level of quality of the application, we have created a dedicated team which designed, implemented and delivered the application. TTPSC has created a high-tech solution utilizing Augmented Reality. The event visitors are… able to download the app (using a QR code or directly from the website) and scan the Lodz EXPO 2022 logo afterwards. This results in displaying an interactive, virtual gallery of the City of Lodz, including vireos and a map of the City center on a users’ smartphones’ screens. Our application has been places in application stores for leading mobile platforms: Android Market and App Store. Regardless of the operating system owned by the user, he was redirected to an appropriate version of the application.