Iron Pagoda of Kaifeng (1049): The Song Glazed-Brick Tower

The Iron Pagoda of Kaifeng is a 13-storey Buddhist tower built in 1049 in Bianjing, the capital of the Northern Song dynasty. It is made of brick, not iron: its name comes from the rust-brown glazed tiles that clothe it from base to tip. Having outlasted the fall of the Song, catastrophic Yellow River floods and modern war, it is one of the finest surviving buildings of 11th-century China.

Background: a capital and its temples

After the Song dynasty was founded in 960, its capital at Bianjing, modern Kaifeng in Henan province, grew into one of the largest cities in the world, with a population often estimated at around a million. Great Buddhist monasteries stood among its markets and canals, enjoying imperial patronage.

One of them, the Kaibao Temple, possessed a famous wooden pagoda designed by the master builder Yu Hao and completed in 989. Reports described it as the tallest structure in the capital. In 1044 lightning struck the tower and it burned down.

Building the pagoda

Emperor Renzong ordered a replacement, and in 1049 a new pagoda was built at the temple. This time the builders chose brick, which would not burn, and covered it with glazed ceramic tiles. The design nonetheless imitated timber architecture: each storey has projecting eaves, brackets and columns rendered in glazed brick, a technique that preserved the look of a wooden tower while avoiding its dangers.

The pagoda rises on an octagonal plan through 13 storeys, narrowing gracefully toward the top. Its height is usually given as about 55–57 metres. Inside, a spiral staircase of stone steps climbs through the core, and narrow windows on the upper floors once offered views over the capital.

The glazed tiles

The tiles are the pagoda’s glory. They were produced in dozens of moulded designs, among them seated Buddhas, bodhisattvas, flying celestial figures, musicians, lions, dragons, flowers and auspicious clouds. Fitted together like a three-dimensional puzzle, they give the surface a rich texture.

Their glaze, a deep brown with a reddish tinge, resembles weathered iron, and by the Ming period the tower was known as the Iron Pagoda. Glazed tiles had long been used on palace roofs, but cladding an entire pagoda this way was a striking display of Song ceramic and building skill.

The pagoda in Song Kaifeng

Pagodas were the tallest buildings of Chinese cities, and in Song Kaifeng the new tower was a landmark visible far across the flat plain of the lower Yellow River. Chinese pagodas developed from the Indian stupa, a mound for relics of the Buddha, but by the Tang period they had become multi-storey towers of timber or brick, such as the Giant Wild Goose Pagoda in Chang’an.

Kaifeng held other Song monuments too. The Po Pagoda, begun in the 970s, still survives in the south of the city, though only its lower storeys remain. Later in the 11th century the capital also became home to Su Song’s astronomical clock tower, a mechanical marvel that did not survive. The Iron Pagoda is the most complete reminder of the city’s architectural splendour.

Floods, earthquakes and war

Kaifeng’s history has been shaped by the Yellow River, which repeatedly broke its banks and buried the city. After the Jurchen captured the capital in the Jingkang Incident of 1127, the Song court fled south and Kaifeng declined, but the pagoda remained.

The worst disaster came in 1642, when the dykes were broken during the siege of Kaifeng by the rebel Li Zicheng and floodwaters devastated the city. Silt accumulated around the pagoda, and today its original base and octagonal platform lie beneath the ground. Records describe dozens of earthquakes over the centuries, yet the tower stands without serious structural collapse.

In 1938, during the Second Sino-Japanese War, Japanese artillery fire damaged the upper storeys. The pagoda was restored in 1957, and in 1961 it was placed on the first list of China’s major protected historical sites.

Today the pagoda stands in Iron Pagoda Park in the northeast of Kaifeng, near surviving sections of the old city wall. The temple buildings around it are later reconstructions, and the park also contains halls and gardens added in modern times. Visitors can still see the moulded tiles at close range, and the contrast between the slender Song tower and the low, flat city around it gives a sense of how the pagoda once dominated the skyline.

Myths and facts

Myth: the pagoda is made of cast iron. China does have true iron pagodas, cast in metal sections, but the Kaifeng tower is brick faced with glazed tiles. The name describes its colour.

Fact: the pagoda is not on its original ground level. Visitors see a tower whose lowest parts are buried by flood silt, which is why published heights vary slightly.

Timeline

• 960: The Song dynasty is founded, with its capital at Bianjing (Kaifeng).
• 989: Yu Hao’s wooden pagoda at the Kaibao Temple is completed.
• 1044: The wooden pagoda is destroyed by lightning and fire.
• 1049: The glazed-brick pagoda is built under Emperor Renzong.
• 1127: The Jurchen take Kaifeng; the Song court flees south.
• 1642: Floods during Li Zicheng’s siege devastate Kaifeng and bury the pagoda’s base.
• 1938: Artillery fire damages the upper storeys.
• 1957–1961: The pagoda is restored and listed as a major national monument.

Why it matters

The Iron Pagoda is a rare survivor from the Northern Song capital, a city otherwise largely lost beneath Yellow River silt. Its fireproof glazed brick, imitating the wooden forms it replaced, shows how Song builders combined religious devotion, engineering and ceramic art, and its endurance makes it a symbol of Kaifeng itself.