The 18th century Ducal Palace (Palazzo Ducale) (Reggia di Colorno), the serpentine design in the long wall is clearly seen, Colorno, Emilia-Romagna, Italy, Europe

The clock tower and the long wall showing the serpentine design, The Ducal Palace (Palazzo Ducale) (Reggia di Colorno), Colorno, Emilia-Romagna, Italy

Ducal Palace near the Grand Canal at sunset, Venice, UNESCO World Heritage Site, Veneto, Italy, Europe

Palazzo Ducale, Ducal Palace, Martina Franca, Taranto, Apulia, Italy

Turrets on the Grand Ducal Palace in the city of Luxembourg, Europe

Coat of arms at the balcony of the Palais Grand Ducal, Luxembourg

Former Grand Ducal National Theatre, Staatstheater, State Theatre, Mainz, Rhineland-Palatinate, Germany, Europe, PublicGround

Grand-Duc, Ducal Palace, Palace of the Grand Duke, house of representatives, Grand Ducal Palace, Luxembourg, Europe

Grand-Ducal Palace, Weimar, Thuringia, Germany, Europe, PublicGround

Palais Grand Ducal (Palace of the Grand Dukes), Luxembourg