The correct answer is: D. Agra Fort
Buland Darwaza is the main entrance to the Agra Fort in India. It was built by Mughal emperor Akbar in 1573 to commemorate his victory over the Gujarat Sultanate. The gate is 54 meters high and 33 meters wide, and is decorated with intricate carvings and inscriptions. It is one of the most impressive examples of Mughal architecture.
Amer Fort is a fort located in Amer, Rajasthan, India. It was built in the 16th century by Raja Man Singh I, a Rajput ruler. The fort is known for its beautiful architecture and its intricate gardens.
Gwalior Fort is a fort located in Gwalior, Madhya Pradesh, India. It was built in the 7th century by the Tomar Rajputs. The fort is known for its massive walls and its many palaces and temples.
Fatehpur Sikri is a ruined city located in Agra district, Uttar Pradesh, India. It was built by Mughal emperor Akbar in the 16th century. The city is known for its beautiful architecture and its many palaces and mosques.