Poznań’s vast 10th century Palace came to symbolise ducal power. It abutted a palatial chapel which is likely to have been Poland’s first Christian place of worship I. The Palace was modelled after the residences of the German emperors. This form of architecture was previously unknown in Poland. It was erected on the initiative of Dobrawa, the wife of the Duke who, being Christian, played a key role in disseminating the new religion among Mieszko’s pagan subjects. Remnants of the Palace and its chapel remain ‘buried. The Palace and Chapel were badly damaged in a Czech raid and popular uprising against the ruling Piast Dynasty in the 11th century. However, mindful of the outstanding achievements of Mieszko I, his great grandson Casimir set out on an ambitious plan to reconstruct the country and restore its power. Upon his return to Poznań, he is said to have had a dream in the devastated Palace chapel. In his dream, an angel handed him a sword to defeat the enemy. Despite the dire circumstances, the Duke persevered in his resolution. His skilful efforts helped bring the Polish state to its former glory, earning Casimir the nickname of the Restorer.