Oldest astronomical observatory
- Who
- Unknown
- Where
- Egypt (Nabta Playa,)
- When
- 01 January 0001
The world’s oldest astronomical observatory is a stone circle in Egypt. Sited on an internally drained basin called Nabta Playa, it comprises a number of huge flat, tomb-like stone structures, dates from about 6,500-6,000 years ago, and has been confirmed by American astronomer Prof. J. McKim Malville and his team to be the oldest known astronomical alignment of megaliths in the world.