A member of the limestone family, Travertine shares some similar characteristics such as being soft and porous. Travertine is formed with many small cavities and holes running through it that can be filled in with cement or resin, or left unfilled for a textured surface. The surface is then polished to a rough or highly polished finish. The filled-in areas remain dull which creates an interesting contrast. Travertine can be used in flooring in numerous rooms in your home. However, like limestone, travertine will require you to have preventative maintenance performed over time, due to its porosity.