Travertine has a quiet natural beauty shaped by the unique features of each piece. A natural stone which has been highly affected by the forces of underground springs and subterranean rivers, travertine is the middle stage of limestone evolving into marble. When mined, voids (air pockets) of various and random sizes caused by carbon dioxide bubbles that became trapped during the formation of the stone These voids truly lend travertine a depth not found in other types of tile. Romans used travertine for building temples, the Coliseum and a great variety of their architectural wonders, and its uses carried through to such beautiful buildings as the Sacre-Coeur Basilica in Paris. Travertine has a subtle elegance which lends it an old-world charm, from rustic to refined. This natural stone brings unique warmth to kitchens, living spaces, and bathrooms.