Obito's Laboratory

Madara Uchiha's Laboratory was only seen when he teleported himself and Danzō Shimura, in an attempt to take out Shisui's eye. There are many glass containers, each one holding an eye in suspended fluid. Both the laboratory's location and purpose are still unknown; however, during the Kage Summit, Madara did mention he liked to stock pile good eyes. It is possible that the eyes in each of the glass jars once belonged to the members of the dead Uchiha clan, taken from their dead bodies during the Uchiha Clan Massacre by Madara.