Tessellations is an online retailer specializing in optical illusions, t-shirts, puzzles, and posters that center around the art and concept of tessellation. Their products often feature intricate and repeating geometric patterns, appealing to enthusiasts of mathematical art and design. Tessellations is known for its unique blend of art and mathematics, providing customers with visually captivating and intellectually stimulating products. The website offers a range of items suitable for various interests, from educational purposes to decorative art for homes or offices.