Aesthetics is an important aspect in the analysis of environmental impact of design of buildings and open spaces. Design review has been implemented in most of the larger cities in the United States, as well as in other countries such as the United Kingdom, France, Germany, Sweden, Italy, the Netherlands, Japan and Spain. Adding to this, the Supreme Court of United States has mentioned the aesthetic criterion as sufficient for an adequate base for development, and in 30 states, the courts determined that aesthetics considerations are sufficient to establish regulations. Specifically, the 'National Environmental Protection Act' of 1969, which determines a carefully evaluation of the effects of major projects in the environment, requires consideration of visual impacts. Moreover, the American courts sustain that environmental beauty is of legitimate public interest and this must be based on the preferences of the general public and not on the personal tastes of government officials (Stamps, 2000; Sanoff, 1991).