when did the construction of the burj khalifa end
Burj Khalifa Construction of the Burj Khalifa began in 2004, with the exterior completed five years later in 2009. The primary structure is reinforced concrete. The building was opened in 2010 as part of a new development called Downtown Dubai. It is designed to be the centrepiece of large-scale, mixed-use development. The decision to construct the building is reportedly based on the government's decision to diversify from an oil-based economy, and for Dubai to gain international recognition. The building was originally named Burj Dubai but was renamed in honour of the ruler of Abu Dhabi and president of the United Arab Emirates, Khalifa bin Zayed Al Nahyan;[3] Abu Dhabi and the UAE government lent Dubai money to pay its debts. The building broke numerous height records, including its designation as the tallest building in the world.
Jama Masjid, Delhi Mughal emperor Shah Jahan built the Jama Masjid between 1644 and 1656. It was constructed by more than 5000 workers. It was originally called Masjid-i-Jahan-Numa, meaning 'mosque commanding view of the world'. The construction was done under the supervision of Saadullah Khan, wazir (or prime minister) during Shah Jahan's rule. The cost of the construction at the time was one million Rupees.[1] Shah Jahan also built the Taj Mahal, at Agra and the Red Fort in New Delhi, which stands opposite the Jama Masjid. The Jama Masjid was completed in 1656 AD (1066 AH).[1] The mosque was inaugurated by an Imam Bukhari, a mullah from Bukhara, Uzbekistan, on 23 July 1656, on the invitation from Shah Jahan.[2] About 25,000 people can pray in the courtyard at a time and it is sometimes regarded as India's largest mosque.[3][4] The mosque is commonly called "Jama" which means Friday.[1]