The old town hall was built in the 1790s to serve as a church .
The old town hall was was joined by institutional buildings including the 1828 Greek Revival Old North Church and the 1839 Canaan Union Academy ( later to become the town library and museum ) .
The old town hall was built in the 1790s to serve as a church , and was joined by institutional buildings including the 1828 Greek Revival Old North Church and the 1839 Canaan Union Academy ( later to become the town library and museum ) .