Opera Gallery, founded in 1994 by Gilles Dyan, is one of the leading international dealers and representatives of Modern and Contemporary Art. The gallery has locations in ... read more
Opera at the Baths of Caracalla, initiated in 1937, is an annual open-air opera festival by the Teatro dell'Opera at the marvellous archeological site of the Roman ... read more
Open Air Museum Stübing (Freilichtmuseum Stübing), part of the Universalmuseum Joanneum and opened in 1970, is dedicated the preservation of Austria's rural life ... read more
The Opdahl Gallery is dedicated to the work of contemporary artists. For more detailed informations, see website read more
Ons' Lieve Heer op Solder (Our Lord in the Attic Museum) was a hidden Catholic Church, which was built on the top three floors of the canal house during the 1660s, ... read more
Onno van Seggelen Fine Arts is based in Rotterdam, Netherlands and specializes in Master Drawings dating from the 16th to early 20th century. By occasion the gallery also ... read more
One Monev Gallery, established in 2017, promotes Contemporary Art, through exhibitions and a regular presence at international art fairs. The gallery also has an office in ... read more
On Stage, Classical Music Competition is an annual classical music competition for Chamber Music and Solo Piano. It is organized by the ON STAGE Classical Music ... read more
Modern and contemporary art gallery located in London working with internationally established artists: Calder, Haring, Basquiat, Picasso, Warhol and more. read more
Omega Auctions is a family run auction house. Areas covered include: Antiques, Collectables & Objet d'Art, Music Memorabilia, TV & Film ... read more
Olympia Auctions has auctioned over thirty thousand lots over the last decade, such as Photographs, British & Continental Paintings, Indian & Islamic works of ... read more
The Oluf Høst Museum is dedicated to Oluf Høst (1884 – 1966) a Danish Expressionist painter. The museum is located in the house where he lived and worked from 1929 ... read more
Oliver Shuttleworth is a broker and consultant of Impressionist, Modern & Post-War art. Oliver has worked in the art world for two decades, with experience of both ... read more
Ole Bull Museum Lysøen is the former summer residence of the Norwegian violin-virtuoso Ole Bull (1810-1880). The villa was built in 1873. The composer often invited ... read more
Old Town Hall is a complex of buildings, created in the 15th century by connecting three townhouses, combined with several reconstructions in the course of the ... read more
The Old Port of Classe (Antico Porto di Classe) is an archaeological site giving the visitors an impression of the ancient port of Ravenna between the 5th and the 6th ... read more
The Old Operating Theatre Museum and Herb Garret, housed in the attic of the early eighteenth-century church of the old St Thomas’ Hospital, offers a unique insight ... read more
