World’s longest underground train network cost £142 million and stops at 508 stations

Shanghai, China, is one of the world's largest cities, home to a staggering 26 million people.

It is the business capital of the country and boasts famous sights such as The Bund, the Oriental Pearl TV Tower, and Yu Garden.

But another thing the city is famous for is its underground train network, the largest in the world with 508 stations.

After two new lines were added in 2021, the network's total distance reached 831km (516 miles). This took the total number of lines on the network to 20.

The network sees 3.6 billion travellers every year, according to official figures.

READ MORE: Only 6 cities in the world with bigger rail networks than the Tube

In total, the system cost £142 million to construct. It also boasts air conditioning, Wi-Fi connectivity, and digital displays for the benefit of commuters.

China also has the world's second-largest metro network in Beijing, the capital.

It has 27 lines, 442 stations, and 22 rapid transit lines.

The London Underground comes in third with 11 lines that cover 402km across 272 stations.

Guangzhou's metro network is the fourth largest and the third Chinese city in the top 10. It has 16 lines and 302 stations across 621km of track.

Fifth is New York City's iconic subway system with 399km of network while New Delhi comes in at sixth. The Indian capital has 393km of track spanning 12 lines and 288 stations.

Moscow, Russia's capital, has 449km of track and 263 stations.

Wuhan, the fourth Chinese city to make the top 10, has 12 lines and 300 stations throughout its 486km network.

In ninth, Seoul boasts a 327km subway system with 9 lines.

Rounding off the top 10, Madrid, Spain, has one the second largest network in Europe with 293km of track.