France
Giverny
Claude Monet Foundation
Nice
Henri Matisse Museum
Paris
Pompidou Center
The Louvre
Rodin Museum
Versailles
Chateau Versailles

Germany
Berlin
Staatliche Museen zu Berlin
Bauhaus Archive Museum of Design
Deutsche Guggenheim
Bonn
Art and Exhibition Hall of the Federal Republic of Germany
Cologne
Museum of Applied Art
Art of the Middle Ages Museum
Dresden
Dresden Art Museum
Dusseldorf
Museum of the 20th and 21st Centuries
Munich
Modern Art Museum
Museum of European Painting
Stuttgart
State Gallery

Greece
Athens
Nat’l Archeological Museum
Acropolis
Nat’l Museum of Contemporary Art
Thessaloniki
State Museum of Contemporary Art
Olympia
Archeological Museum of Olympia
Delphi
Archeological Museum of Delphi

Russia
Moscow
Pushkin State Museum of Fine Art
Moscow Museum of Modern Art
St. Petersburg
Hermitage Museum

The Netherlands
Amsterdam
The Rijksmuseum
The Stedelijk Museum of Modern Art
The Van Gogh Museum
Rembrandt House Museum
Leiden
Nat’l Museum of Antiquities
Rotterdam
Museum Boijmans Van Beuningen
The Hague
Mauritshuis Royal Picture Gallery
GEM Museum of Contemporary Art

England
Birmingham
Birmingham Museum and Art Gallery
Cambridge
Fitzwilliam Museum
Liverpool
Tate Gallery in Liverpool
Walker Art Gallery
London
British Museum
Nat’l Gallery
Tate Gallery
Tate Modern
Victoria and Albert Museum
The Wallace Collection
Nat’l Portrait Gallery
Saatchi Gallery
Oxford
Ashmolean Museum

Scotland
Aberdeen
Aberdeen Art Gallery and Museums
Edinburgh
Nat’l Galleries of Scotland
Royal Scottish Academy

Ireland
Belfast
Ulster Museum 
Dublin
Nat’l Gallery of Ireland
Irish Museum of Modern Art

Portugal
Lisbon
Gulbenkian Museum
Nat’l Museum of Contemporary Art

Spain
Barcelona
Picasso Museum
Barcelona Contemporary Art Museum
Nat’l Museum of Art of Catalonia
Bilbao
Guggenheim Bilbao Museum
Granada
The Alhambra Palace
Madrid
The Prado
Thyssen-Bornemisza Museum
Palma
Pilar and Joan Miro Foundation of Mallorca

Switzerland
Zurich
Zurich Art Gallery
Swiss Nat’l Museum

Italy
Florence
Uffizi Gallery
Casa Buonarroti
Florence Museums
Medici Palace
Pitti Palace
Milan
Santa Maria del Grazie
Naples
Nat’l Archeological Museum
Rome
Borghese Gallery
Capitoline Museum
Farnese Palace
Nat’l Gallery of Modern and Contemporary Art
Vatican
Vatican Museums
Venice
Peggy Guggenheim Collection
City Museums

Austria
Linz
Museum of Modern Art
Gothenburg
Rohsska Museum for Design and Applied Art
Salzburg
Museum of Modern Art
Vienna
Albertina Graphic Arts Collection
Liechtenstein Museum
Vienna Kunsthistorisches Museum

Denmark
Copenhagen
Arken Museum of Modern Art
Danish Museum of Art and Design
Nat’l Museum
State Museum of Art

Sweden
Stockholm
Nat’l Museum

Czechoslovakia
Prague
Nat’l Gallery
Mucha Museum

Hungary
Budapest
Hungarian Nat’l Gallery

Poland
Warsaw
Center for Contemporary Art

General Guide http://www.artcyclopedia.com/museums-int.html