Built by Shah Jahan in 1648 as the seat of Mughal power-a role it maintained until 1857-the magnificent crescent-shaped Red Fort in New Delhi, named after the stunning red sandstone used in its construction, covers a vast area of more than two square kilometers, all of it surrounded by a large moat. Highlights include its two largest gates: the impressive Lahore Gate (the fort's main entrance) and the elaborately decorated Delhi Gate, once used by the emperor for ceremonial processions.A fun part of a visit is exploring Chatta Chowk, a 17th-century covered bazaar selling everything from jewelry to silk garments, as well as souvenirs and food items. While you can explore the fort yourself, guided tours are offered and provide a fascinating insight into the life and times of the Shah, including a peek into the stunning white marble Hall of Public Audiences (Diwan-i-Am) where he received his subjects.