The New Chambers in Sanssouci Park, Potsdam, were constructed for King Frederick the Great of Prussia from 1771 to 1775. The building, which stands to the west of Sanssouci Palace, serves as a complement to the Picture Gallery, which lies to the east. Both buildings flank the summer palace.
The chambers replaced an orangery, which had been built at that site in 1745 on plans by Georg Wenzeslaus von Knobelsdorff and held the terraces' potted plants during the winter months. Ramps, on which the tubs were taken in and out, serve as reminders of the building's original use. Master builder Georg Christian Unger was commissioned to turn the orangery building into a guesthouse. The building's basic elements were left alone, as were its size and floor-to-ceiling french doors. The most obvious change was the addition of a cupola on the middle section. The similarities between the architecture of the New Chambers and that of the Picture Gallery are such that the both buildings can be mistaken for the other.
The real alteration occurred in the interior, where seven guest rooms and two ballrooms were created. The building is a highpoint of the late style of Frederican Rococo, even though classicism was already largely set as the prevailing taste of the period. The guest rooms were decorated differently with lacquered, painted, or inlaid cabinets, whose costly inlays of native woods decorated the entire wall from the ceiling to the floor. For paintings, the guest rooms have views of Potsdam, which document the town's design under Frederick the Great and were specially commissioned for the guesthouse by the king.
In the middle of the building, under the cupola, lies the largest room, the Jasper Room. The ballroom's walls are gloriously decorated with red jasper and grey Silesian marble. The same colors are found in the floor design. The ceiling painting Venus mit ihrem Gefolge (Venus with her Retinue) was created in 1774 by Johann Christolph Frisch. Decorated panels from both antiquity and the 18th century were attached to the background of red jasper.
The second, large ballroom, located in the eastern part of the New Chambers is the Ovid Gallery, decorated in the style of French mirrored rooms. On the long side of the room is a mirror stretching almost to the ceiling, across from which, on the garden side, are french doors. Frederick wished that the walls be decorated with gilded reliefs of the liaisons of the ancient gods, which had been told by the Roman poet Ovid in his Metamorphoses. The room's rich decoration comes from the workshop of the Bayreuther sculptors and brothers Johann David Räntz and Johann Lorentz Wilhelm Räntz.References:
The Palazzo Colonna is a palatial block of buildings built in part over ruins of an old Roman Serapeum, and has belonged to the prestigious Colonna family for over twenty generations.
The first part of the palace dates from the 13th century, and tradition holds that the building hosted Dante in his visit to Rome. The first documentary mention notes that the property hosted Cardinal Giovanni and Giacomo Colonna in the 13th century. It was also home to Cardinal Oddone Colonna before he ascended to the papacy as Martin V (1417–1431).
With his passing, the palace was sacked during feuds, and the main property passed into the hands of the Della Rovere family. It returned to the Colonna family when Marcantonio I Colonna married Lucrezia Gara Franciotti Della Rovere, the niece of pope Julius II. The Colonna"s alliance to the Habsburg power, likely protected the palace from looting during the Sack of Rome (1527).
Starting with Filippo Colonna (1578–1639) many changes have refurbished and create a unitary complex around a central garden. Architects including Girolamo Rainaldi and Paolo Marucelli labored on specific projects. Only in the 17th and 18th centuries were the main facades completed. Much of this design was completed by Antonio del Grande (including the grand gallery), and Girolamo Fontana (decoration of gallery). In the 18th century, the long low facade designed by Nicola Michetti with later additions by Paolo Posi with taller corner blocks (facing Piazza Apostoli) was constructed recalls earlier structures resembling a fortification.
The main gallery (completed 1703) and the masterful Colonna art collection was acquired after 1650 by both the cardinal Girolamo I Colonna and his nephew the Connestabile Lorenzo Onofrio Colonna and includes works by Lorenzo Monaco, Domenico Ghirlandaio, Palma the Elder, Salviati, Bronzino, Tintoretto, Pietro da Cortona, Annibale Carracci (painting of The Beaneater), Guercino, Francesco Albani, Muziano and Guido Reni. Ceiling frescoes by Filippo Gherardi, Giovanni Coli, Sebastiano Ricci, and Giuseppe Bartolomeo Chiari celebrate the role of Marcantonio II Colonna in the battle of Lepanto (1571). The gallery is open to the public on Saturday mornings.
The older wing of the complex known as the Princess Isabelle"s apartments, but once housing Martin V"s library and palace, contains frescoes by Pinturicchio, Antonio Tempesta, Crescenzio Onofri, Giacinto Gimignani, and Carlo Cesi. It contains a collection of landscapes and genre scenes by painters like Gaspard Dughet, Caspar Van Wittel (Vanvitelli), and Jan Brueghel the Elder.
Along with the possessions of the Doria-Pamphilij and Pallavacini-Rospigliosi families, this is one of the largest private art collections in Rome.