The Forts of Delhi The best way to know about the glorious heritage of Delhi is to know its monuments, to travel through time back into centuries of history filled with the rise and fall of dynasties that ruled the land. These monuments stretch from Wazirabad in the north to the Qutab and beyond in the south of Delhi . Between these two points, lies scattered the history of this ancient city Jantar Mantar An astronomical observatory with masonry instruments, designed by the astronomer - king Sawai Jai Singh II of Jaipur, in 1724. Gurudwara Bangla Sahib This was the royal palace of Raja Jai Singh . He dedicated this palace, to the sacred memory of Guru Harkishan, the eighth Guru of the Sikhs. Laxmi Narayan Temple Popularly known as the Birla Mandir, this huge Hindu temple was built in 1938. Qutab Minar Built by Qutub-ud-din-Aibak, this tower standing 72.5 m tall, dates back to the 13th century, and is one of the greatest bequests of Islamic culture. Lotus Temple A distinctive lotus - shaped marvel, built in marble, it has been dubbed the "Taj Mahal of the 21st century". Safdarjung Tomb This marble - domed mausoleum was the last Mughal monument to be built in Delhi . Red Fort One of Delhi 's magnificent monuments, the Red Fort was built by Emperor Shah Jahan, the architect of the Taj Mahal, in 1648. Jama Masjid India 's largest mosque, built in 1656, it is an eloquent reminder of the religious fervour of the Mughals. Rajghat Cremation ground of Mahatma Gandhi, the Father of the Nation. Humayun's Tomb An example of early Mughal architecture, it is believed to be the prototype of the Taj Mahal. Zoo One of the finest zoological parks in the country, it houses the largest number of white tigers. India Gate The 42 m high arch was raised as a memorial to the soldiers, who laid down their lives in the great world war. Connaught Place The stylish commercial centre, Connaught Place , with the colourful stalls on Janpath, and the emporia on Baba Kharak Singh Marg, is a shopper's paradise