Solstice

These split boulders mark equinoxes and solstices along the Seattle skyline.

Each solstice, students and astronomy enthusiasts gather at a primitive but functioning sun wheel to witness how humanity first used this calendar.

This metal installation is a tribute to an ancient megalithic structure and South Yorkshire's steel history.

Winter and summer solstice aligned sculpture in the middle of nowhere.

The site where the Emperor of Korea performed the long-forbidden "rite of heaven" to demonstrate his absolute sovereignty.

This 17th-century place of worship still celebrates holidays in the traditional Swedish fashion.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

Magnificent frescoes decorate the interior of this Romanesque church, which also showcases an unusual phenomenon during winter solstice.

Local lore claims this rocky cape hides a lost Aztec treasure.

This suburban British town holds secrets that would have made the druids proud.

Once a year, thousands of naked cyclists flood the streets of a Seattle neighborhood.

An ancient underground cultic temple where sunlight penetrates on the summer solstice.

A circle of stones on a hilltop in Peru’s high jungle, aligned with the winter solstice and largely ignored by archaeologists.