The Moscow Metro is widely considered one of the most efficient, reliable, and beautiful subway systems in the world. Known as the "People’s Palaces," many of its older stations feature stunning socialist-realist art, elaborate mosaics, marble walls, and massive chandeliers, making it a major tourist attraction in its own right. Beyond its aesthetics, the system is a marvel of engineering; trains run with incredible frequency, often arriving every 90 seconds during peak hours. The network is vast, covering nearly the entire city with over 250 stations and a massive "Big Circle Line" that simplifies transfers. It is also exceptionally deep—Park Pobedy station is one of the deepest in the world—serving as a potential bomb shelter. In 2026, the system continues to expand rapidly into the suburbs. While the signage can be challenging for non-Cyrillic readers, the sheer punctuality, cleanliness, and low cost make it the gold standard for urban mass transit globally.