Fernando Romero's Border City presented a vision for a binational city on one of the world's most important borders, that of the United States and Mexico, whose boundary states are now home to over 100 million people. The concept was rooted in the long history of places where frontiers meet, cities where cultures both clash and blend. This integrated masterplan was conducive to both sides of the border, drawing upon industrial, employment and trade opportunities while recognising shortcomings in urban planning. Romero's urban prototype, with a hexagonal plan, offered a new model for cities as populations grow, migration increases, and economies continue to globalise.