There is one place named Young Observatory in America.
All places in the world called "Young Observatory".
Riverside (46)
Centerville (43)
Fairview (40)
Midway (39)
Franklin (39)
Union (37)
Greenwood (37)
Marion (36)
Glendale (36)
Salem (36)
Georgetown (35)
Oakland (35)
Liberty (35)
Fairfield (35)
Lincoln (35)
Pleasant Valley (35)
Florence (34)
Arlington (34)
Greenville (34)
Bethel (34)
Springfield (34)
Clinton (34)
Chester (33)
Kingston (33)
Clifton (33)
Milton (33)
Hamilton (33)
Newport (33)
Farmington (33)
Mount Pleasant (32)