armillary sphere in courtyard at the ancient observatory, the sphere was created in 1439 to determine coordinates of celestial bod

alloy ancient architecture armillary art artistic asia asian astrology astronomical bare beijing bronze building celestial china chinese city cityscape courtyard craftsmanship day decorated dragon gazing instrument landmark landscape northern observatory oriental ornate outdoors overcast paved pretelescopic red scenic sculpture smog sphere star stargazing stark technology tree urban vintage winter