The Kaufpark Eiche covers a total area of 160,000 m² and 130 stores. The center consists of specialty markets, specialty stores and gastronomy. Since June 2022, 3d-berlin offers wayfinding via easyGuide mobile on site, or with easyGuide web conveniently from home. Instead of kiosk systems, there are QR code signs in the building that visitors can scan. This opens the easyGuide mobile application, which shows users their current location within the building and allows them to search for a desired destination.