Celebrating the Summer Solstice at Stonehenge in Photos

The Summer Solstice has been celebrated over the years in Stonehenge, the ancient monument in Wiltshire, England.
Celebrating the Summer Solstice at Stonehenge in Photos Niklas Hallen/AFP/Getty Images

A "strawberry moon" will light up the sky tonight, coinciding with the summer solstice—the longest day of the year—for the first time since 1967. Astronomers have hailed the event as a once or twice-in-a-lifetime occurrence.

An estimated 25,000 people are expected to gather at Stonehenge in the U.K., the ancient monument in Wiltshire where the solstice is traditionally celebrated.

This year, for the first time, those who would like to see the solstice from one of its most popular vantage points will have to pay to park at Stonehenge. English Heritage said it had made the decision to protect the stones and pay for the solstice celebrations, but some who want to celebrate have suggested they will protest the decision.

Revellers witness a purple, pink and yellow sky as they celebrate the pagan festival of Summer Solstice at Stonehenge in Wiltshire, southern England on June 21, 2015. Niklas Hallen/AFP/Getty Images