Question: What size is best for installing travertine outdoors.

Answer: French pattern, a combination of 4 different sizes 16x24, 16x16, 8x16 and 8x8 is by far the most popular travertine paver in the marketplace.

Usually the bigger the area, the bigger the pavers, such as 24x24 pavers. If it is a smaller area, smaller sizes like 6x12 or 16x16 would fit better.