Grants 1 free Great Merchant. Canal districts across your empire provide +10% Great Merchant points you generate. Product in cities with Canal districts provide +50% Tourism. Each type of Specialized districts or Cistern adjacent to Canal district or Panama Canal in this city provide corresponding yield to International Trade Routes from this city.
Upon completion 1 or 2 adjacent Canal districts are automatically constructed. The Canal wonder tile can now be crossed by naval units. Must be built on a flat land tile where there are two adjacent tiles directly across the build tile from one another that meet the following criteria: one adjacent tile must be able to legally hold a Canal district connecting into the Panama Canal construction tile; the other must be either a city, a Lake/Coast tile, or be another tile that can hold a connecting Canal.
+2 Tourism
+1 extra per Era that you've advanced past this Wonder's era