The document provides information about several historical monuments and buildings located in the Qutub complex in Mehrauli, Delhi, India, including the Qutub Minar tower, Alai Darwaza gateway, and Tughlaq tombs. It describes the Qutub Minar as a 72.5 meter tall minaret that was begun in the 12th century and completed in the 14th century. The Alai Darwaza gateway was built in 1311 and features horseshoe arches and intricate carvings. The Tughlaq tombs from the 14th century exhibit early Indo-Islamic architectural styles with influences from Hindu temple design.