The Crystal Palace was a cast iron and plate glass structure, originally built in Hyde Park, London, to house the Great Exhibition of 1851. The exhibition took place from 1 May to 15 October 1851, and more than 14,000 exhibitors from around the world gathered in its 990,000-square-foot (92,000 m) exhibition space to display examples of technology developed in the Industrial Revolution. Designed by Joseph Paxton, the Great Exhibition building was 1,851 feet (564 m) long, with an interior height of 128 feet (39 m), and was three times the size of St Paul's Cathedral.
The 293,000 panes of glass were manufactured by Chance Brothers. The 990,000-square-foot building with its 128-foot-high ceiling was completed in thirty-nine weeks. The Crystal Palace boasted the greatest area of glass ever seen in a building. It astonished visitors with its clear walls and ceilings that did not require interior lights.