Blue Hill Meteorological Observatory
Located atop Great Blue Hill at the junction of Interstate 93 and Route 138 about 10 miles ( 16 km ) south of Boston , Massachusetts , it is home to the oldest continuous weather record in North America , and was the location of the earliest kite soundings of the atmosphere in North America in the 1890s , as well as the development of the radiosonde in the 1930s . 
<triplet> Great Blue Hill <subj> Massachusetts <obj> located in the administrative territorial entity <triplet> Massachusetts <subj> Great Blue Hill <obj> named after <subj> North America <obj> continent