Each of these shapes has a purpose: they are sundials, a total of thirty in all.

Sundial of the Groirie in Yvre-l’Eveque.

The south face is the one with the most dials.

Sundial of the Groirie in Yvré-l’Evêque.

Above this book are aligned six cylindrical dials.

The south face also has two other vertical dials.

The north face has five dials.

Sundial of the Groirie in Yvré-l’Evêque.

The whole sculpture is surmounted by a concave crescent-shaped dial.

They became very popular in Europe during the 15th and 16th centuries.

Made in 1596 of wood, paper, iron, brass.

Sundial at Mont Sainte-Odile Abbey

Currently at the Landesmuseum in Wurttemberg, Stuttgart, Germany.

Photo:Greg Schechter/Wikimedia Commons

Multi-faceted sundial in Barrington Court, Somerset dating from the 1920s.

The sundial is built around a dodecahedron.

Sundial at Mont Sainte-Odile Abbey

Photo:Ad Meskens/Wikimedia Commons

sundial by Ludwig von Hohenfeld

sundial from 1793 located at Musée dauphinois (Dauphinois Museum

sundial near Roman Baths in Sanssouci Park

sundial in Barrington Court

sundial in front of Abbotsford House