Final answer:
Stonehenge in England is an ancient monument that functioned as an astronomical observatory and calendar, with alignments marking the solstices and moon's positions.
Step-by-step explanation:
Stonehenge, located in England, was built between 3000 and 1000 B.C. and has served various functions, such as being an ancient astronomical observatory. This prehistoric monument is most notably associated with the alignment of its stones with the sun during the summer and winter solstices, as well as the moon's position at certain times of the year. Consequently, Stonehenge is considered an ancient calendar and observatory, used by people in Neolithic England to track seasonal changes and time.
The construction of Stonehenge is a hallmark of a settled Neolithic society rather than nomadic cultures.