The photo is a tweet with two images. The first image shows a picturesque Swiss valley scene, with green hills, houses, and a clear sky. The second image shows the same valley, but covered in snow, with the mountains in the background. The joke, in Turkish, is about the desire to experience different kinds of beauty. The tweet expresses a wish ("keşke gidebilsem") to be able to travel to Switzerland and experience a beautiful morning there. Then, the tweet juxtaposes a summery morning view with a wintery one, highlighting the beauty of either season. The humor comes from the implied contrast between these two wonderful, but very different experiences, and that the poster finds them both desirable. It's a simple, evocative expression of appreciating the variety of nature's beauty.