The Red Fort
Mughal Emperor Shah Jahan built the fort in 1648, which has initially been White and was named "Qila-e-Mubarak" (English: "The Blessed Fort"). During the British period in India, the fort was painted red and renamed as Red Fort.
The largest diamond in the World, Kohinoor, which is embellishing the crown of England's Queen Elizabeth today, was a part of the Red Fort furniture.
The Qutub Minar
The Qutub Minar was built by and named after the Moghul Emperor Qutb-ud-din Aibak in 1193.
With a height of 72.5 meters, It is the tallest brick minaret in the World and is a UNESCO World Heritage Site.
There is a 23 feet long Iron Pillar in the Qutb complex that has been standing high without rusting for over 2000 years.
The India Gate
The India Gate is a war memorial that commemorates the 70,000 soldiers of the Indian Army who were martyred in the First World War. If you go close to the gate, you will find the names of soldiers inscribed all over it.
There is an unbroken flame called Amar Jawan Jyoti near the fort that keeps burning during the days and nights and is being administered by the soldiers of the Navy, Airforce, and the Army.
The Lotus Temple
The Lotus Temple was designed by an Iranian architect called Fariborz Sahba, and the construction completed in 1986. The development was funded by a follower of Bahá'í religion called Ardeshir Rustampur of Sindh, who gave his life savings for the monument.
The Lotus Temple is the only Bahá'í Temple in India and one of the only Seven present all over the World.
It is the most visited monuments in the World, with more than four million visitors every year.