Kyo-ri

Places in this region

Cheomseongdae

Numerical symbolism abound at East Asia's oldest observatory

Numbers are important at Cheomseongdae, the oldest astronomical observatory in East Asia. Though the observatory's age (it dates back to the 7th century Silla Kingdom of modern-day South Korea)... »

Instruments of Science, Retro-Tech, Architectural Oddities | Edited by Trevor and Nicholas Jackson