The applicant for PD approval is encouraged to demonstrate excellence in architectural and site design. Specific development standards are intentionally broad and general to allow maximum flexibility and creativity. It is anticipated that applicants for PD approval will utilize this flexibility to enable the creation of highly attractive and functional urban spaces. The architectural design and materials must however, be compatible with surrounding and internal development. Developers are encouraged to identify local historic elements to build upon in the design process to help create an authentic sense of place and interest. The PD should also advance design concepts that incorporates motorized and non-motorized travel and creates functional and attractive mobility choices. Sidewalks or other approved non-motorized transportation facilities should be provided to link nonresidential areas with residential areas, both inside and outside the PD.