Largest permanent 2-D map

Largest permanent 2-D map
Who
O'Hara Park School
What
4550 square metre(s)
Where
United States (Oakley ,)
When
1992
The largest permanent two dimensional map measures 4550 m² 49,000 ft² and was painted by students of O'Hara Park School, Oakley, California, USA in the summer of 1992.