Having a lot in common with Angkor Wat, Phimai shows a great example of classical Khmer architecture. Ancient Khmer architects were best known for their superior use of sandstone over the traditional bricks and laterite architectures. Sandstones are used on the outer layer where they are visible. Laterite on the other hand was used for the outer wall and other hidden parts. All the structures are huge sandstone blocks. There are many lotus shaped roofs which represent Mount Meru (A holy mountain in Hinduism).