Start your tour at Nevsky Prospect in St Petersburg, and then head below ground to explore the city’s metro stations. Whereas most European city metros are dark, gloomy and have little to write home about, the same can’t be said in St Petersburg, where stations were designed as palaces for the people.
As you walk through the underground tunnels, learn about the Soviet Union in its heyday and marvel at the artwork and architecture that epitomized the regime’s power and prosperity. Travel by metro to Ploshchad Vosstaniya at Uprising Square and admire its incredible bas-relief carvings (sculptures carved on a flat surface) of revolutionary events featuring leaders like Lenin and Stalin.
Visit Avtovo, the station that many consider an underground palace with its marble columns, gold mosaics and sculptures of soldiers carved into a palatial entranceway. See more intriguing bas-reliefs at Kirovskiy Zavod, a station named after the nearby Kirov industrial plant, and then continue to Admiralteyskaya  one of the deepest underground stations in the world at a depth of 282 feet (86 meters).
After exploring the underground artwork of St Petersburg, return to Nevsky Prospect, where your tour finishes.