The Grand Canal is the longest and oldest artificial waterway on earth, and it is still working. Dug in sections from the 5th century BC, unified into one imperial system under the Sui in the 7th century AD, and re-routed into its present north-south line under the Yuan in the 13th century, it runs about 1,794 kilometers from Beijing to Hangzhou and links five of China's major river basins. UNESCO inscribed it on 22 June 2014 as China's 46th World Heritage property, listing 27 river sections and 58 heritage sites across 1,011 kilometers of waterway. What sets it apart is that it was never retired: barges still move bulk cargo through Suzhou every day.
You do not visit it as a ruin behind a rope. You walk its towpaths, cross its bridges, and eat dinner on a boat while a thousand-tonne barge slides past.
The Grand Canal in Numbers
- 1,794 km — the Beijing-Hangzhou main line, from Tongzhou in Beijing to Hangzhou in Zhejiang.
- Five river basins — the Hai, Yellow, Huai, Yangtze and Qiantang, joined by one artificial channel.
- 2,500 years — from the first sections in the 5th century BC to the present, in near-continuous use.
- 27 sections, 58 sites, 1,011 km — the components UNESCO actually inscribed in 2014.
- 490 million tonnes — annual freight on the Jiangsu section alone, roughly 80 percent of the canal's total.
Two and a Half Thousand Years, Built in Pieces
The canal was not designed by one person or built in one reign. It accumulated.
The earliest stretches were military supply lines cut in the 5th century BC, when rival states in the lower Yangtze needed to move troops and grain by water rather than around it. Those were local tools, not a national system.
The national idea arrived in the 7th century. After reunifying China, the Sui needed to feed a capital and a northern frontier from the rice surplus of the south, and linked the separate canals into one network centered on Luoyang. UNESCO calls this the moment the canal was conceived as a unified means of communication for the empire for the first time, and the largest civil engineering project in the world before the Industrial Revolution.
The Yuan then redrew the map. Moving the capital to Dadu, on the site of modern Beijing, made the Luoyang detour pointless, so the line was rebuilt to run directly north-south. That alignment is the canal you can trace today; by the 13th century the network exceeded 2,000 kilometers of artificial waterway.
Under the Ming and Qing it became an institution. Eight provinces shipped three to four million shi of tribute grain north each year, moved by a state fleet on a fixed calendar, with canal towns rising or fading according to their place on the route. The timber and stone for the Forbidden City came up the same water. Beijing, as the old saying goes, was a city floated in.
The Engineering Problem Nobody Sees
China's rivers mostly run east. The canal had to run north, and it had to climb.
From the Yangtze delta near sea level the channel rises onto the North China Plain, then crosses the Huai and Yellow rivers — two waterways that flood, silt up and change course. Keeping it navigable for two millennia took three separate solutions: managing gradient with stepped locks, guaranteeing supply through a chain of retaining lakes and feeder channels, and meeting the great rivers at engineered junctions rather than letting them wreck the line. The materials were local: dressed stone and rammed earth, held together by dams, weirs, sluices and bridges.
Baodai Bridge, south of Suzhou, shows how much engineering hides inside a pretty view. Built in the Tang dynasty around 816, it is 316 meters long, just over four meters wide, and carried on 53 closely spaced arches. The profile was deliberate: the bridge runs parallel to the canal and spans the mouth of Dantai Lake, so the wide, low arches let floodwater through while the deck served as a towpath for crews hauling barges by rope. Rebuilt in 1232, repaired repeatedly — including under Lin Zexu in 1831 — it is recognized as the longest ancient stone arch bridge in China, and was inscribed as a canal heritage site in 2014.
Suzhou: Where the Canal Is Still a Street
If you have time for one stretch, make it Suzhou. The canal runs 96 kilometers through the city across five districts, and this is the busiest and best-preserved navigable section of the whole system. More than 6,000 vessels pass daily, cross-section freight density is around 80 million tonnes, and the channel has been upgraded to third-class standard able to take 1,000-tonne ships. You will see them from the bank: long, low barges pushed by a tug, moving gravel through the middle of a 2,500-year-old city.
Suzhou's World Heritage components are compact — seven points plus the historic waterway, within a heritage area of 642 hectares and a buffer of 675. Two are places to spend an evening.
Shantang Street was created in 825, when the poet Bai Juyi arrived as prefect, found the road to Tiger Hill impassable, and cut a canal and a paved way beside it. Nearly 1,200 years later the arrangement is unchanged: one street, one canal, houses on both sides, seven li — just under four kilometers — from the city gate to the hill. It is still called the White Lord's Embankment after him.
Pingjiang Road preserves the other classic canal pattern, water and land running parallel. It is a lived-in neighborhood rather than a stage set: laundry, bicycles, a primary school, tea houses that fill after dark.
The standard visitor move is a night boat, from the Shantang wharves or the old canal near Panmen. Boats run 40 to 60 minutes under stone bridges lit from below. Book on the spot; weeknights are quieter, and light rain beats a crowd.
Hangzhou and the Southern Terminus
The canal ends at Gongchen Bridge in Hangzhou. First built in 1631 and rebuilt in the Guangxu reign, it is a three-arch stone bridge about 98 meters long, high enough for loaded barges to pass without lowering their masts, and it has marked the southern end of the imperial canal for four centuries.
The Qiaoxi block behind it is the best place on the whole canal to read its modern history: warehouses, granaries, a former textile mill, and the wharves that made this district industrial before it became fashionable. Hangzhou's inscribed components total about 110 kilometers of waterway in five river sections plus six heritage sites, among them the Fuyi Granary, a Qing-era public rice store that fed the city when the canal was its lifeline.
The Canal That Dried Up and Came Back
In 1855 the Yellow River shifted course, cut the canal's channel and left a raised riverbed that severed the north-south link. Railroads arrived, the imperial grain fleet was wound up at the start of the 20th century, and the 707 kilometers north of the Yellow River — through Shandong, Hebei, Tianjin and Beijing — silted, dried and fell out of navigation for roughly a century. South of the river, the canal never stopped working.
Then it was rewatered. In April 2022 the Ministry of Water Resources coordinated reservoirs, the South-North Water Transfer project and diverted Yellow River water to refill the northern section. On 28 April the water ran through end to end for the first time in about a hundred years, a replenishment of 840 million cubic meters. The program has run every year since.
The canal is now both a World Heritage site and an active infrastructure corridor, under a national cultural park program launched with a State Council plan in 2019 across eight provinces and municipalities. Restoration, towpath cycling routes and canal museums have followed the water.
How to See It
One day in Suzhou. Start at Panmen, the surviving water-and-land gate on the old city wall, go south to Baodai Bridge for the 53 arches with nobody in the frame, then return to Shantang Street for dinner and a night boat. Allow eight hours.
Half a day in Hangzhou. Gongchen Bridge at dusk, then the Qiaoxi block. It is 15 minutes by taxi from West Lake and worth the detour even on a short trip.
Yangzhou holds the Grand Canal Museum, opened in 2021 and the best single explainer of how the system worked.
Season. April to May and September to November are comfortable. July and August are hot and humid along the whole route, and the Jiangsu section is most photogenic in the hour after sunset, when the bridges are lit.
Frequently Asked Questions
How long is the Grand Canal?
The Beijing-Hangzhou main line is about 1,794 kilometers. The full historic system, including abandoned branches, ran to roughly 3,166 kilometers. The UNESCO inscription covers 1,011 kilometers in 27 sections.
Is it a UNESCO World Heritage site?
Yes — inscribed on 22 June 2014 at the 38th session in Doha, as China's 46th property, with 58 associated heritage sites.
Can you cruise the entire canal?
No. The southern half is fully navigable and carries heavy freight, but the 707 kilometers north of the Yellow River are watered without being open to through navigation. Short tourist cruises run in Suzhou, Hangzhou, Wuxi, Yangzhou and Beijing's Tongzhou district.
Last updated: October 2026