The Red Fort was the seat of the Mughal Empire for more than two hundred and fifty years and is a UNESCO World Heritage Site. It is an amazing example of a blend of Persian, Indian, and European architecture, and was completed in 1640 by Shah Jahan, the emperor that created the Taj Mahal. The great city inside the massive sandstone walls of the Red Fort offers visitors a large number of architectural and historical attractions; it was once known as the 8th wonder of the world. Red Fort showcases the very high level of art form and ornamental work. The art work in the fort is a synthesis of Persian, European and Indian art which resulted in the development of unique Shahjahani style which is very rich in form, expression and color. The walls of the fort are smoothly dressed, articulated by heavy string-courses along the upper section. They open at two major gates, the Delhi and the Lahore gates. The Lahore Gate is the main entrance; it leads to a long covered bazaar street, the Chandni Chowk, whose walls are lined with stalls for shops. The Chandni Chowk leads to a large open space where it crosses the large north-south street that was originally the division between the fort's military functions, to its west, and the palaces, to its east. The southern end of this street is the Delhi Gate.
Beyond this gate is another, larger open space, which originally served as the courtyard of the Diwan-i-Aam, the large pavilion for public imperial audiences with an ornate throne-balcony for the emperor. The imperial private apartments lie behind the throne. The apartments consist of a row of pavilions that sits on a raised platform along the eastern edge of the fort, looking out onto the river Yamuna. The pavilions are connected by a continuous water channel, known as the Nahr-i-Behisht, or the "Stream of Paradise", that runs through the centre of each pavilion. The Diwan-i-Khas is a pavilion clad completely in marble; the pillars are decorated with floral carvings and inlay work with many semi-precious stones. The two southernmost pavilions of the palace are zenanas, or women's quarters: the Mumtaz Mahal (now a museum), and the larger, lavish Rang Mahal, which has been famous for its gilded, decorated ceiling and marble pool, fed by the Nahr-i-Behisht. To the west is the Moti Masjid, the Pearl Mosque. This was a later addition, built in 1659 as a private mosque for Aurangzeb, Shah Jahan's successor. It is a small, three-domed mosque carved in white marble, with a three-arched screen which steps down to the courtyard. To its north lies a large formal garden, the Hayat Bakhsh Bagh, or "Life-Bestowing Garden," which is divided by two channels of water. A pavilion stands at either end of the north-south channel, and a third, built in 1842 by the last emperor, Bahadur Shah Zafar, stands at the centre of the pool where the two channels meet.