The main attraction of Ruskeala is a flooded quarry. The water in the reservoir is emerald, and the rocks around are multi-colored. Since the 17th century, marble was mined here, which was later used to build the Winter Palace, Kazan and St. Isaac’s Cathedrals. This is a man-made "bowl" in a solid mass of marble, cut through a system of shafts, adits and drifts. There is nothing else like it in Europe. The deposit itself covers an area of several tens of square kilometers, and has been explored to a depth of more than five hundred meters .

Marble mining stopped in the 1990s, and since 2005 there has been a tourist park here. Ruskeala is famous for its excellent acoustics. The international music festival Ruskeala is held here annually in the open air. Symphony. To illuminate the park, 241 LED floodlights with a power of 36 watts are used. The shimmer of colored lanterns resembles the northern lights.