A synagogue dating to the second temple era (first century) was claimed to be discovered on the Tel Reches' peak in Galilee earlier this month! There is an article at this site:
First-Century Synagogue Unearthed in Galilee
A synagogue, predating the destruction of the Second Temple in 70 AD, has been discovered at Tel Rechesh in Galilee...
www.biblearchaeology.org