The front gate of Lal Qila. The walls are 70 feet high.
Photograph: Nico Crisafulli/Flickr/Creative Commons

The courtyards feature patterned gardens. Two mosques are also part of the fort.
Photograph: Jmacleantaylor/Wikimedia Commons

Diwan-i-aam: The public hall have perfectly aligned pillars/columns that were meant to enhance the impact of Akbar's voice during his darbar sessions.
Photograph: KD7827/Wikimedia Commons