Meanwhile, in Lysolaje, a suburb north of Prague, a replica pre-historic wooden rhinoceros has been built using oak, larch, and acacia, for little ones to climb and admire. Artists Roman Švejda and Lukáš Gavlovský claim it's the world's largest rhinoceros sculpture. The new playground is part of revitalization plans for the area and is located in a former sandpit where the skeletal remains of a prehistoric rhinoceros were actually found. The back of the sculpture will change color throughout the seasons.