Method for providing a set of data files from a remote server computer to a mobile hand-held client device, particularly a Smartphone or a tablet computer, the set of data files comprising texture data being associated with a portion of a three-dimensional surface in an image scene, wherein • the image scene is defined by an observation point and a direction and/or angle of view, • the set of data files is a subset of data files being stored on the server computer, and • each data file comprises texture data in one of a plurality of different detail levels, the method comprising establishing a connection between the mobile hand-held client device and the remote server computer via the internet by means of a wireless connection, characterized in that the method further comprises • providing geometry data in a memory of the mobile hand-held client device, the geometry data being associated with the three-dimensional surface in the image scene, • selecting data files with texture data for being provided by the server computer, wherein selecting data files □ comprises selecting, based on the geometry data, data files to be requested, the texture data (21, 22) of which is visible in a present image scene and particularly has a required detail level, and □ is performed by a calculation unit of the hand-held client device based on the geometry data and on visibility conditions of the three-dimensional surface in the image scene, and • requesting the provision of the selected data files from the remote server computer to the hand-held client device via the wireless internet connection, wherein the visibility conditions comprise • a visibility of a portion of the three-dimensional surface in the image scene, and • a detail level of the texture data associated with a portion of the three-dimensional surface in the image scene, wherein the detail level meets the criteria of a predefined quality factor which is calculated based on a distance from the surface to an observation point and a coverage factor associated with the texture. • the image scene is defined by an observation point and a direction and/or angle of view, • the set of data files is a subset of data files being stored on the server computer, and • each data file comprises texture data in one of a plurality of different detail levels, the method comprising establishing a connection between the mobile hand-held client device and the remote server computer via the internet by means of a wireless connection, • providing geometry data in a memory of the mobile hand-held client device, the geometry data being associated with the three-dimensional surface in the image scene, • selecting data files with texture data for being provided by the server computer, wherein selecting data files □ comprises selecting, based on the geometry data, data files to be requested, the texture data (21, 22) of which is visible in a present image scene and particularly has a required detail level, and □ is performed by a calculation unit of the hand-held client device based on the geometry data and on visibility conditions of the three-dimensional surface in the image scene, and □ comprises selecting, based on the geometry data, data files to be requested, the texture data (21, 22) of which is visible in a present image scene and particularly has a required detail level, and □ is performed by a calculation unit of the hand-held client device based on the geometry data and on visibility conditions of the three-dimensional surface in the image scene, and • requesting the provision of the selected data files from the remote server computer to the hand-held client device via the wireless internet connection, • a visibility of a portion of the three-dimensional surface in the image scene, and • a detail level of the texture data associated with a portion of the three-dimensional surface in the image scene, wherein the detail level meets the criteria of a predefined quality factor which is calculated based on a distance from the surface to an observation point and a coverage factor associated with the texture.