In the Room of the Great Vase, room 128, you can admire the huge Kolyvan Vase: weighing some 19 tons. It is so large and heavy that it had to be positioned in the room before it was completed. Its name derives from the Siberian region where the block of jasper it was carved from originated. It took 154 horses to pull the sleighs that carried it, and 11 long years to complete the sculpture.