The early Mayas of Quintana Roo took advantage of their shoreline locations. Their navigational skills were useful in establishing trade routes with other Mayas in the Peninsula of Yucatan and civilizations in Central America. Trade in agricultural products and sea shell jewelry allowed for greater expansion and status of these civilizations. The city of Tulum, one of the last to be built is an example of such way of commerce. Built almost exclusively for trading, they also flourished in art, with many wall paintings still preserved.