At Gadsden we believe that it is our responsibility to actively participate in strengthening and growing local communities; to preserve and enrich the life here by using environmentally, socially, and economically sustainable building processes. The West Side Story When we envision the future of downtown, we see connections. The Mercado and Mission Districts’ tree-lined streets, buildings, plazas and the streetcar that bridges the gap between the downtown’s East and West side. This area is one of the longest continually inhabited areas in North America; it is literally America’s oldest neighborhood and Tucson’s newest. The Mission District is situated along the Modern Street Car in Tucson’s expanding center, along the 100-mile bike loop that surrounds our city. Close by you will find a community enriched in culture, embarking on plans to rebuild the Mission San Agustin, a newly planned Regional Visitor’s Center, and many more attractions. The Mission District will provide opportunities for longer stays in downtown hotels, more streetcar rides, increased business revenue, and sales taxes generated. Building For The Future, Tucson’s First LEED Neighborhood. Part of the largest Transit-Oriented Development in the Southwest to receive Stage 2 Gold Certification under the USGBC’s LEED-ND (Neighborhood and Development) Pilot Program. The whole neighborhood is planned as a LEED standard, sustainable, transit-oriented development with commercial and residential buildings. The Mercado District & Mission District is Tucson’s Market District Some of the greatest cities in the world are home to dynamic market districts. The Gadsden Company and Mission District Partners are working to add Tucson, Arizona to that list.