3-4 player board: http://www.amazon.com/Official-Settlers-Catan-Board-Plastic/dp/B00ETFD8XS/ref=sr_1_2?ie=UTF8&qid=1387137739&sr=8-2&keywords=catan+board
5-6 player board: http://www.amazon.com/Official-Settlers-Catan-Board-Plastic/dp/B00ETFTX9Q/ref=sr_1_1?ie=UTF8&qid=1387137769&sr=8-1&keywords=catan+board