View of Jaisalmer Fort, built in 1156 by Rawal Jaisal, which has 99 bastions around its circumference, Jaisalmer, Rajasthan, India

Europe, Portugal, Tomar. April 14, 2022. Ornate interior of the Convent of Christ in the Castle of Tomar. Built by the Knights Templar, a UNESCO World Heritage Site.

View at the Reichsburg (castle) (built about 1100 under Pfalzgraf Ezzo) and Cochem, Mosel, Rhineland-Palatinate, Germany, Europe

The stone houses which are built without cement and the graveyard the monk settlement which was founded 588 and was abandoned about 1100, Skellig Michael, Ireland

The stone houses which are built without cement the monk settlement which was founded 588 and was abandoned about 1100, Skellig Michael, Ireland