The circle was found during construction in a small town in northern Denmark.

Cool Finds

Archaeologists in Denmark Discover 4,000-Year-Old Circle of Wooden Posts Resembling Stonehenge

The monument once featured more than 80 posts, which formed a circle measuring nearly 100 feet across. Its prehistoric builders may have used it as a ritual site

A girl runs through sprinkles of water to cool off on a hot summer day.

Smithsonian Photo Contest Galleries

See 15 Stunning Scenes of Summer

These highlights from the Smithsonian Magazine Photo Contest will remind you of everything you love about the season

I thought I saw more red foliage this fall. Is that related to climate change?

Does Climate Change Affect Leaves’ Fall Colors? And More Questions From Our Readers

You’ve got questions. We’ve got experts

Crowds gather for the summer solstice at Stonehenge in Wiltshire, England.

Nine Ways People Celebrate the Summer Solstice Around the World

Across the Northern Hemisphere, worshippers of the longest day of the year build bonfires, plunge into the ocean and visit prehistoric monuments

A close-up of Stonehenge in Salisbury, England

What Do Stonehenge and Japanese Stone Circles Have in Common?

A new exhibition explores the surprising parallels between British and Japanese traditions

Pietas affiliate groups have built temples across Italy.

When I Celebrated the Summer Solstice With Ancient Roman Gods and Goddesses

Members of a group in Italy called Association Pietas are reviving the ancient religion of Rome

Summer solstice sunrise over Stonehenge

Virtual Travel

How to Livestream Stonehenge’s Summer Solstice Celebrations

Annual event at the Neolithic monument will be broadcast virtually in place of an in-person gathering

Charlie Morrow and dozens of others will stream video and audio of science, art and shamanism connected to their cultures as the sun passes at 5 p.m. in each of the Earth's 24 time zones.

It’s a Global Solstice Party and You’re Invited

Sound artist Charlie Morrow organized artists and scientists from around the Earth to celebrate the solstice