Dear Mr Węgliński, thank you for contacting us and for your interest in using Mapy.com in your research. The photographs displayed on Mapy.com are primarily user-generated content and remain protected by the rights of their respective authors. The licence granted to Mapy.com by users allows us to use the photographs within our service, but it does not generally allow third parties to download the photographs or create a separate research dataset from them. For this reason, we are unfortunately unable to grant you permission to use or download a sample of photographs from Mapy.com for the described research project, even if the project is non-commercial and the photographs would not be published. You may consider using photographs released under an appropriate open licence, or photographs for which you obtain permission directly from their authors. Thank you for your understanding, and we wish you success with your thesis. Best regards, Mapy.com Team