Regions worldwide celebrate the summer solstice during various festivals by honoring the longest day of the year through communal events. Common activities include bonfires, dance, music, and feasting that echo ancient traditions. In places like Sweden, the Midsummer festival features flower crowns and dancing around a maypole, while in Stonehenge, devotees gather to witness the sunrise. These celebrations often symbolize renewal, the earth's fertility, and the power of sunlight, bringing communities together to embrace the change of seasons and cultural heritage.