Photographer Martin Schoeller traveled to the annual “Twins Days Festival” in Twinsburg, Ohio to photograph pairs of identical twins in his trademark close-up style.

The portraits were made for a National Geographic cover story on twins. You can find more of Schoeller’s work here.

A Thing or Two About Twins [National Geographic]

Image credits: Photographs by Martin Schoeller/National Geographic, and courtesy of VAUGHAN HANNIGAN