This study focuses on what is a suitable urban form within an urban planning paradigm that a city of the 21st century pursues. The urban planning paradigm is likely to reflect the values of an age, as the idea represents one age with the result that comes to meet physically various urban forms. Urban form can be considered as the form of urban management that enables the solutions to the problems that the city faces, as well as adaption to the new change. In this respect, it is necessary to examine what paradigm is needed for the 21st century, as well as what can be brought to the traditional urban forms(concentrated type, latticed type, linear type) through the change of paradigm. The reason why the urban forms in accordance with the change of urban paradigm was considered, mainly through the International competition entry works for the Multi-functional Administrative City, is that all those International Competitions were the ones for a large-scale city which will be newly constructed for the first time in the 21st century, as well as, were promoted to suggest a vision of a future city.