Electoral Palace, Renaissance palace in Mainz, Germany.

Electoral Palace is a Renaissance building on the Rhine waterfront in Mainz, Germany, made up of several wings with corner turrets and decorated stone facades. The wings were built at different times, which gives the whole complex a varied look as you walk along its length.

Construction of the palace began in 1627 under Archbishop Georg Friedrich von Greiffenklau; the Thirty Years' War and the War of the Grand Alliance delayed it, and the Rhine wing was only completed in 1687. The north wing was ready by 1752, and work on the river-away wing followed under Archbishops Ostein and Erthal. On 23 October 1792 the Mainz Jacobin Club, the first on German soil, was founded in the palace. After wartime destruction the exterior was rebuilt faithfully and the building reopened on 31 December 1949.

The east wing houses the Römisch-Germanisches Zentralmuseum, whose replicas and original finds trace prehistoric life, the Roman Empire and the early Middle Ages. The north wing holds the Akademiesaal, where the four Mainz carnival clubs stage "Mainz bleibt Mainz, wie es singt und lacht", broadcast live since 1973. On 23 October 1792 the Mainz Jacobin Club, the first on German soil, was founded in the palace.

The palace stands on the Rhine side of central Mainz, where the Rheinstraße and Kaiserstraße corner post carries the street signs. The east wing holds the Römisch-Germanisches Zentralmuseum, while the north wing is the function hall used for events; check which entrance serves your destination before crossing the courtyard.

The Grand Staircase by Baroque architect Balthasar Neumann was removed during the French occupation. The palace's exterior, including its roofs, was restored true to the original after 1945, but the interior was rebuilt with modern fittings. The east wing now holds the Römisch-Germanisches Zentralmuseum.