Up to 23,000 people gathered amid beating drums and blowing horns to witness the Summer Solstice at Stonehenge on Tuesday.
Police said at sunrise there had been six arrests
Cheers rang out across Salisbury Plain in Wiltshire as the sun rose over the heel stone at 0458 BST.
The all-night festivities at the ancient stone circle passed relatively peacefully, police said.
Wiltshire Police said that there had been eight arrests during the day, mainly for drink-related offences.
English Heritage chief executive Dr Simon Thurley said: "There has been no trouble. People seem to have enjoyed themselves."
English Heritage has now opened the site to the public free of charge for the Summer Solstice since 2000.
About 2,000 people gathered for Solstice celebrations at the ancient stones in Avebury.
There were no arrests, police said.