In view of the dramatic increase in the population of world cities, the necessities of aesthetic urban planning have increased. Addressing the aesthetics problems of urban spaces implies working with new models of aesthetic cities for developing comprehensive urban planning. This study highlights the importance of the consideration of urban aesthetics in the urban planning process using the qualitative grounded theory study as the main methodology. The study further showed the need for planners to consider economic and social outputs in planning considerations. The study contributes that the planning process should be tailored to implement aesthetic inherited planning into urban planning management.

This research reviewed the Nigeria's environmental laws within the context of Agenda 21 at the three levels of water, forest degradation and solid waste management with the intent of evaluating the importance of Agenda 21 on environmental sustainability in the country. Furthermore, the study examined the Nigeria's environmental laws to determine its effectiveness. In this way, the study provided information on the effectiveness and extent of United Nations interventions on environmental issues in Nigeria thereby revealing the gap between such interventions and actual environmental challenges of the country.

21st.Century witnesses enormous technological development effecting Architecture also: New and improved building materials and construction techniques, highly innovative development of structural systems utilizing advanced computer software leads to significant novelties in built environment, worldwide. The 'Diagrid Structure', having a hyperboloid form, of which the first design and implementation was applied by V. Shukhov in, as early as, 1896. Both due to diagrid and to its doubly curved form, it proved to achieve greater lateral strength, rigidity and efficiency than rectangular frame system, decreasing the amount of the required material, besides offering the possibility of prefabrication and ease of assembly. Although the first diagrid structure was built in 1963-the IBM building in Pittsburgh-it did not utilize a doubly curved form. The system was not widely recognized until the Gherkin Tower designed by Sir N. Foster was completed in London, in 2003, displaying the twinning of architectural and structural design.