The Ironbridge Gorge is a deep gorge formed by the River Severn in Shropshire, England.

Originally called the Severn Gorge, the gorge now takes its name from its famous Iron Bridge, the first iron bridge of its kind in the world, and a monument to the industry that began there. The bridge was built in 1779 to link the industrial town of Broseley with the smaller mining town of Madeley and the growing industrial centre of Coalbrookdale.

There are two reasons the site was so useful to the early industrialists. The raw materials, coal, iron ore, limestone and clay, for the manufacture of iron, tiles and porcelain are exposed or easily mined in the gorge. The deep and wide river allowed easy transport of products to the sea.

The gorge carries the River Severn south towards the Bristol Channel. It was formed during the last ice age when the output from the previously north flowing river became trapped in a lake (Lake Lapworth) created when the Irish Sea ice sheet dammed the river. The level of the lake rose until it was able to flow over the hills to the south. This flow eroded a path through the hills forming the gorge and permanently diverting the Severn southwards.

Coordinates: 52°37′40″N 2°29′07″W / 52.6278°N 2.4854°W / 52.6278; -2.4854

Ironbridge is a settlement on the River Severn, at the heart of the Ironbridge Gorge, in Shropshire, England. It lies in the civil parish of The Gorge, in the borough of Telford and Wrekin. Ironbridge developed beside, and takes its name from, the famous Iron Bridge, a 30 metre (100 ft) cast iron bridge that was built across the river there in 1779.

The area around Ironbridge is described by those promoting it as a tourist destination as the "Birthplace of the Industrial Revolution". This description is based on the idea that Abraham Darby perfected the technique of smelting iron with coke, in Coalbrookdale, allowing much cheaper production of iron. However, the industrial revolution did not "begin" in one place, but in many. The growth of railways, spinning machines, weaving and other industrial inventions and activities were going on all over the country. Smelting iron by Darby was but one small part of this generalised revolution and was soon superseded by the great iron-smelting areas. However, the bridge - being the first of its kind fabricated from cast iron, and one of the few which have survived to the present day - remains an important symbol representative of the dawn of the industrial age.^{[citation needed]}