St. Petersburg is full of hidden treasures.

Just this month, Russian archeologists unearthed a 19th century market in the city center that had been buried under a parking lot and forgotten.

Now, the lot has been dug up to reveal the beautifully preserved foundations of a labyrinth-like market that was built in 1868.

The Novo-Aleksandrovsky Market was reportedly once one of the largest markets in St. Petersburg before the Russian Revolution, with more than 800 stalls selling furniture, books, antiques and clothes. In 1932, it was closed and partly dismantled by the Soviet authorities.