Agra fort – the rusty and majestic red-sandstone fort of Agra stands on the banks of the river Yamuna and the construction was started by Emperor Akbar in 1566. At the Diwan-I-Khas (hall of private audience) where marble pavilions with floral inlays lend an ethereal ambience, the Emperor sat on his gem-studded Peacock Throne and met foreign ambassadors and rulers of friendly kingdoms. The fort is a must see as its so much more than you can imagine.