The city's name derives from the Arabic 'qal'at-al-jarar' ('Castle of jars') – a name that attests to the antiquity of the pottery works which are still thriving. It has been inhabited since prehistoric times, as shown by the presence of two necropoleis dating from the second millennium BCE and by numerous other archaeological finds. It was later inhabited by the Sicels pre-Roman population.
The Arabs built a castle here that in 1030 was attacked by Ligurian troops under the Byzantine general George Maniakes, who have left traces of Ligurian language in the current dialect. The city flourished under the Norman and Hohenstaufen domination, becoming a renowned center for production of ceramics.
Caltagirone was almost completely destroyed by the earthquake of 1693. Many public and private buildings have then been reconstructed in earthquake Baroque style. Primarily for this reason the city has been included, together with the surrounding territory, in an area protected by the UNESCO World Heritage program.References:
Frösöstenen is the northern-most raised runestone in the world and Jämtland's only runestone. It originally stood at the tip of ferry terminal on the sound between the island of Frösön and Östersund. The stone dates to between 1030 and 1050. It has now been relocated to the lawn in front of the local county seat due to the construction of a new bridge, between 1969 and 1971, on the original site.
Frösö runestone inscription means: Austmaðr, Guðfastr's son, had this stone raised and this bridge built and Christianized Jämtland. Ásbjörn built the bridge. Trjónn and Steinn carved these runes.