Maslak United States) constructing with steel costs more than constructing with concrete. The reason for choosing steel was its relative strength in resisting earthquakes (Istanbul is located along an active fault), whereas concrete is more fire-resistant. The stations "İTÜ-Ayazağa" and "Atatürk Oto Sanayi" along the M2 line of the Istanbul Metro serve the Maslak business district and its surrounding neighbourhoods. One of the five campuses of the Istanbul Technical University, the Ayazağa Campus, is located in Maslak. Maslak Maslak is one of the main business districts of Sarıyer, Istanbul, Turkey, located on the European side of the city. It was formerly
Ottawa Commercial Historic District Ottawa Commercial Historic District The Ottawa Commercial Historic District is a historic district in downtown Ottawa, Illinois. The district includes 195 buildings and structures, most of them commercial buildings, spread out over 26 city blocks. The oldest buildings in the district, located near the Illinois and Fox rivers, were built in the 1830s. The district expanded northward toward the Illinois & Michigan Canal over time, and the buildings in its northern half date to the mid-to-late 19th and early 20th centuries. The district's buildings include most popular Midwestern architectural styles from the mid-19th century through the mid-20th century; some of