The application is an addition to postcards with a picture of the Kaliningrad Royal Castle, which cannot be seen in the real world. By purchasing a postcard with an image of the Royal Castle (http://www.ekskursia39.ru/) and downloading the application, you will be able to see the castle in 3D in miniature and listen to a short historical background about the castle.
To use the application, follow the following instructions:
1. Install the application
2. Point to the Postcards image
3. On the right side, click on the speaker icon to turn on the audio guide
To use the application, follow the following instructions:
1. Install the application
2. Point to the Postcards image
3. On the right side, click on the speaker icon to turn on the audio guide
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