Sunrise at Summer Solstice celebrations, Stonehenge, UNESCO World Heritage Site, Wiltshire, England, United Kingdom, Europe

Tourists view standing stones of Neolithic henge, Stonehenge, UNESCO World Heritage Site, Wiltshire, England, United Kingdom, Europe

Performers during Inti Raymi Festival of the Sun, Plaza de Armas square, UNESCO World Heritage Site, Cusco (Cuzco),Cusco Province, Cusco Region, Peru, South America

Performers during Inti Raymi Festival of the Sun, Plaza de Armas square, UNESCO World Heritage Site, Cusco (Cuzco), Cusco Province, Cusco Region, Peru, South America

Revellers gather at historic monument for Summer Solstice celebrations, 21 June 2016, Stonehenge, UNESCO World Heritage Site, Wiltshire, England, United Kingdom, Europe

Dunnet Head Lighthouse at summer solstice sunrise, Caithness, Highlands, Scotland, United Kingdom, Europe

Performers during Inti Raymi Festival of the Sun, Plaza de Armas square, UNESCO World Heritage Site, Cusco (Cuzco), Cusco Province, Cusco Region, Peru, South America

Dunnet Head Lighthouse at summer solstice sunrise, Caithness, Highlands, Scotland, United Kingdom, Europe

Revellers gather at historic monument for Summer Solstice celebrations on 21 June 2016, Stonehenge, UNESCO World Heritage Site, Wiltshire, England, United Kingdom, Europe

The famous stone circle at Stonehenge, England

Summer Solstice celebrations, Stonehenge, UNESCO World Heritage Site, Wiltshire, England, United Kingdom, Europe

Summer Solstice parade, Downtown Santa Barbara, California, United States of America, North America

The Milky Way arching over Emerald Lake and Emerald Lake Lodge in Yoho National Park, BC. This was on June 6, 2016 and despite it being about 1:30 am, the sky, especially to the north at left, is still lit by blue twilight from the short solstice night.

Swedish Costume Group, dance, Midsummer Festival, Laeckoe slott, Laeckoe castle, baroque palace in Vaestergoetland on the island of Kallandsoe, Vaenern, Sweden, Europe

Bonfire for the celebration of midsummer night in Peretshofen, community Dietramszell, district of Bad Toelz Wolfratshausen Bavaria, Germany, Europe

Bonfire at midsummer, Johannisfeuer bonfire, Midsummer Festival, Wolfratshausen, Upper Bavaria, Bavaria, Germany, Europe, PublicGround

Summer solstice, marks for sundial, metal plates on paved floor, Hoheward waste dump, Herten, Recklinghausen, Ruhr area, North Rhine-Westphalia, Germany, Europe

A young woman performs on ropes inside a giant inflatable float at a parade in Santa Barbara.

Revelry and happiness at a parade in Santa Barbara. The parade features extravagant floats and costumes.

Preparing to inflate a float for a parade in Santa Barbara. The parade features extravagant floats and costumes.

A Brazilian dancer performs at a parade in Santa Barbara. The parade features extravagant floats and costumes.

A harem dances up the street at a parade in Santa Barbara. The parade features extravagant floats and costumes.

A unique bicycle at a parade in Santa Barbara. The parade features extravagant floats and costumes.

A woman creates a mask on a girl for a parade in Santa Barbara. The parade features extravagant floats and costumes.

Two female tourists walk through a field of lupines towards the volcano mountains in the distance at sunset on a sunny summer evening, Iceland

A beautiful volcanic mountain scene with wispy clouds and blue sky is accented in late evening light behind a field full of lupine wildflowers, Iceland

A boardwalk path leads hikers through the hiking route on the Vatnajokull National Park plateau, Iceland

A rugged rocky mountain landscape at sunset in the summer, Iceland