Complex sentence: Since its opening, one of the great attractions of the Comega Building was its strategic location, at the corner of Avenida Corrientes and Avenida Leandro N. Alem, near the Stock Exchange, the Casa Rosada and other public offices, and headquarters of major exporters.
Split into simpler sentences: Since its opening, one of the great attractions of Comega was its strategic location. The corner of Avenida Corrientes and Avenida Leandro N. Alem, near the Stock Exchange, the Government House and other public offices, and headquarters of major exporters.