As of 2026, the Moscow Metro is not the biggest in the world by length or number of stations, but it remains the largest in Europe and the biggest outside of China. It currently has 304 stations and roughly 535 km of route length, ranking as the 8th-longest system globally. The world's largest metro networks are overwhelmingly located in China, with Shanghai (802 km) and Beijing (836 km) dominating the top spots. However, the Moscow Metro is world-famous for its "underground palace" architecture, featuring marble walls, mosaics, and ornate chandeliers. It is also one of the most efficient, with peak-hour headways as low as 90 seconds. While it may not be the longest, its Big Circle Line (57 km) is one of the world's longest circular metro lines, showcasing Russia's commitment to ambitious urban infrastructure development.