The Lugou Bridge, also known as the Marco Polo Bridge, is a famous stone bridge located 15 km outside of the Beijing city center across the Yongding river—a main tributary of Hai River. (However, in recent years, the water of Yongding river is diverted to Beijing so there is no water under Lugou bridge.) The Lugou Bridge is well-known because it was highly praised by the Venetian traveler Marco Polo during his visit to China in the 13th century (the bridge was later known in Europe simply as the Marco Polo Bridge), and for the Marco Polo Bridge incident, which marked the beginning of the Sino-Japanese War (1937-1945).
Construction of the original bridge on this site commenced in 1189 and was completed in 1192 and was later reconstructed in 1698. The Lugou Bridge is 266.5 m (874 ft) in length and 9.3 m (30.5 ft) in width, supported on 281 pillars. On each pillar stands a stone lion. The most intriguing feature of these beasts is the fact that there are more lions hiding on the head, back or under the belly or on paws of each of the big lions. Investigations to determine the total number of animals have been carried out on several occasions but the results have proved inconsistent, ranging anywhere from 482 to 496. However, record has it that there were originally a total of 627 lions. The posture of each lion varies, as do their ages. Most date from the Ming (1368-1644) and Qing (1644-1911) dynasties, some are from the earlier Yuan Dynasty (1271-1368); while the few lions dating from as long ago as the Jin Dynasty (1115-1234) are now quite rare.