The sun rises over the Glastonbury Tor, a hill in England, on June 21. The summer solstice is the longest day of the year, and marks the official start of summer in the western hemisphere. Here, the sun is directly above a stone tower, the only remaining building of St. Michael’s, a church that was located on the hill in the 14th century. Glastonbury Tor is also an important site in local myths and legends, making it a popular destination to watch the sunrise during the solstice. (Image credit: Peter Cziborra/Reuters)