On the main page you'll see I have grouped my images into various "galleries". The same image might appear in several different galleries. For example, an image of Half Dome would be in the Yosemite gallery, and the Black and White gallery.
To avoid seeing repeat images, choose the "All" option, and you'll be presented with every image on the site, without repeats.
Remember, to see a bigger version of an image, just click on it, and it will appear in a separate window. You can then preview how the image will look on a wall with the "Wall Preview" button, or if you are on a smart device such as a smart phone or tablet, use augmented reality to place the image on YOUR wall.