From Academic Kids
Urban design is related to urban planning, but focuses on the physical design of places and deals at a more fine-grained scale. It may include the arts of civic design and elements of architecture and landscape architecture. Street furniture is playing more and more a role in urban planning and further city income by outdoor advertising.
Urban design tends to suggest a serious collective concern for three-dimensional space and as much consideration for the public areas between or beneath buildings as for the buildings themselves. This would imply an understanding of microclimate, the durability of materials, practicality of maintenance and the wishes of likely future users.
- Principles of Urban Design in Words and Pictures (http://www.carfree.com/design/index.html)