Paul converted Schloss Esterházy in Eisenstadt from a medieval castle into a Baroque palace.
Paul began his renovations of Schloss Esterházy in 1663.
The additions made by Paul took nearly ten years to complete and gave the palace the façade it has retained to the present.

Paul further extended, ornamented, and fortified Forchtenstein Castle with architect Domenico Carlone.
At Forchtenstein Castle, Paul founded the Esterházy family's treasure house and created an extensive portrait gallery of Esterházy family ancestors.
Paul converted Schloss Esterházy in Eisenstadt from a medieval castle into a Baroque palace. Paul began his renovations of Schloss Esterházy in 1663. The additions made by Paul took nearly ten years to complete and gave the palace the façade it has retained to the present.
Paul further extended, ornamented, and fortified Forchtenstein Castle with architect Domenico Carlone. At Forchtenstein Castle, Paul founded the Esterházy family's treasure house and created an extensive portrait gallery of Esterházy family ancestors.
Paul I, Prince Esterházy