-
open:facility,
-
unwanted:area,
-
scientific:facility,
-
external:structure,
-
numerous:facility,
-
meaningful:way,
-
national:facility,
-
white:area,
-
specialized:facility,
-
unusual:structure,
-
academic:thing,
-
educational:facility,
-
historical:building,
-
stationary:building,
Category Nuances for observatory:
-
scientific,
-
educational,
-
meaningful,
-
stationary,
-
open,
-
external,
-
specialized,
-
national,
-
unusual,
-
academic,
-
historical,
-
numerous,
-
unwanted,
-
white,
Simple Categories for observatory: