Fatehpur Sikri or 'the City of Victory' is a fortified city in Agra, Uttar Pradesh. It was founded in 1569 by the Great Emperor of the Mughal dynasty Akbar. The palace city atop a rocky ridge, confined within walls on its three sides and a lake in the foreground, was designed by Tuhir Das using Indian principles of art. The structures in the city have been designed following the styles of Hindu, Jain and Islamic architecture, using red sandstone, which is also called as 'Sikri sandstone'. The city can be entered through several gates that are erected at different points along the wall bordering the fort. The gates are namely the Chandanpal Gate, the Agra Gate, the Tehra Gate, the Lal Gate, the Delhi Gate, the Birbal Gate, the Gwalior Gate, the Ajmere Gate and the Chor Gate.