We already have the most visited museums and art museums. For this post, we listed the top 10 largest art museums in the world based on Wikipedia's List of largest art museums. On that list, there are 64 museums, but since this is Top10Zone, we only covered the ten most largest.

The art museum (called art gallery in some places) is concerned primarily with the object as a means of unaided communication with its visitors. Aesthetic value is therefore a major consideration in accepting items for the collection. Traditionally, these collections have comprised paintings, sculpture, and the decorative arts. A number of art museums have included the industrial arts since the 19th century, when they were introduced, particularly to encourage good industrial design. It can be argued that aesthetics have subordinated function and association to such an extent that objects often are presented in a totally alien context. In some countries this criticism applies to archaeological material as well.[source]

Now see the top 10 largest art museums in the world.

Table of Contents:
πŸ‘‰ Houston Museum of Fine Arts
πŸ‘‰ Victoria and Albert Museum
πŸ‘‰ National Museum of Anthropology
πŸ‘‰ Royal Ontario Museum
πŸ‘‰ Tokyo National Museum
πŸ‘‰ Vatican Museums
πŸ‘‰ Metropolitan Museum of Art
πŸ‘‰ National Museum of China
πŸ‘‰ State Hermitage Museum
πŸ‘‰ Louvre

Top 10 Largest Art Museums in the World

πŸ‘‰ Number 10 - Houston Museum of Fine Arts
The Museum of Fine Arts, Houston (MFAH), located in the Houston Museum District, Houston, is one of the largest museums in the United States. The permanent collection of the museum spans more than 6,000 years of history with approximately 70,000 works from six continents. It was established in the year 1900. Its gallery space is 28,000 sq. m (300,000 sq. ft).
Hequals2henry

πŸ‘‰ Number 9 - Victoria and Albert Museum
The Victoria and Albert Museum in London is the world's largest museum of applied arts, decorative arts, and design, housing a permanent collection of over 2.27 million objects. It was founded in 1852 and named after Queen Victoria and Prince Albert. It was established in 1852 and has a total gallery space of 30,658 sq. m (330,000 sq. ft).
DAVID ILIFF

πŸ‘‰ Number 8 - National Museum of Anthropology
The National Museum of Anthropology is a national museum of Mexico. It is the largest and most visited museum in Mexico. Located in the area between Paseo de la Reforma and Mahatma Gandhi Street within Chapultepec Park in Mexico City, the museum contains significant archaeological and anthropological artifacts from Mexico's pre-Columbian heritage, such as the Stone of the Sun and the Aztec Xochipilli statue. It was established in the year 1964 and has a gallery space of 33,000 sq. m (360,000 sq. ft).
MusΓ©e National d'Anthropologie,  kornemuz

πŸ‘‰ Number 7 - Royal Ontario Museum
The Royal Ontario Museum is a museum of art, world culture and natural history in Toronto, Ontario, Canada. It is one of the largest museums in North America and the largest in Canada. It attracts more than one million visitors every year, making the ROM the most-visited museum in Canada. The museum is north of Queen's Park, in the University of Toronto district, with its main entrance on Bloor Street West. Museum subway station is named after the ROM and, since a 2008 renovation, is decorated to resemble the institution's collection. Established in 1912, it has a gallery space of 36,000 square meters.
Aviad2001

πŸ‘‰ Number 6 - Tokyo National Museum
The Tokyo National Museum is an art museum in Ueno Park in the Taitō ward of Tokyo, Japan. It is one of the four museums operated by the National Institutes for Cultural Heritage, is considered the oldest national museum in Japan, is the largest art museum in Japan, and is one of the largest art museums in the world. The museum collects, preserves, and displays a comprehensive collection of artwork and cultural objects from Asia, with a focus on ancient and medieval Japanese art and Asian art along the Silk Road. There is also a large collection of Greco-Buddhist art. The museum holds over 110,000 Cultural Properties, including 89 National Treasures of Japan, 319 Horyuji Treasures, and 644 Important Cultural Properties. In addition, the museum houses over 3000 Cultural Properties deposited by individuals and organizations, including 55 national treasures and 253 important cultural properties (as of March 2019). The museum also conducts research and organizes educational events related to its collection. It is unknown when was this museum established. It has a gallery space of 38,000 square meters.
Honkan,Tokyo National Museum, at Taito-ku Tokyo Japan, designed by Jin Watanabe in 1937, Wiiii

πŸ‘‰ Number 5 - Vatican Museums
The Vatican Museums are the public art and sculpture museums in the Vatican City. They display works from the immense collection amassed by the Catholic Church and the papacy throughout the centuries including several of the most renowned Roman sculptures and most important masterpieces of Renaissance art in the world. The museums contain roughly 70,000 works, of which 20,000 are on display, and currently employ 640 people who work in 40 different administrative, scholarly, and restoration departments. It was established in the year 1506. It is the 5th in the list with the gallery space of 43,000 sq. m (460,000 sq. ft).
The Vatican Museums, Rome, seen from St. Peter's, F. Bucher

πŸ‘‰ Number 4 - Metropolitan Museum of Art
The Metropolitan Museum of Art of New York City, is the largest art museum in the United States. Its permanent collection contains over two million works, divided among 17 curatorial departments. The main building at 1000 Fifth Avenue, along the Museum Mile on the eastern edge of Central Park in Manhattan's Upper East Side, is by area one of the world's largest art galleries. A much smaller second location, The Cloisters at Fort Tryon Park in Upper Manhattan, contains an extensive collection of art, architecture, and artifacts from medieval Europe. It is the 4th in the list with a gallery space of 58,820 sq. m (633,100 sq. ft) and was established in 1870.
The Metropolitan Museum of Art (The Met) entrance faΓ§ade in Upper East Side, Manhattan, New York City, Flickr

πŸ‘‰ Number 3 - National Museum of China
The National Museum of China flanks the eastern side of Tiananmen Square in Beijing, China. The museum's mission is to educate about the arts and history of China. It is directed by the Ministry of Culture of the People's Republic of China. It is the 3rd largest art museum on the list with the gallery space of 65,000 sq. m (700,000 sq. ft) and was established in 1959.
Front of National Museum of China in 2016, Shujianyang

πŸ‘‰ Number 2 - State Hermitage Museum
The State Hermitage Museum is a museum of art and culture in Saint Petersburg, Russia. The second-largest art museum in the world, it was founded in 1764 when Empress Catherine the Great acquired an impressive collection of paintings from the Berlin merchant Johann Ernst Gotzkowsky. It has been open to the public since 1852. It attracted 968,604 visitors in 2020, a drop of eighty percent from 2019, due to the COVID-19 pandemic. In 2020 it ranked eleventh on the List of most visited art museums in the world. Its total gallery space is 66,842 sq. m (719,480 sq. ft).
πŸ‘‰ Number 1 - Louvre
The Louvre, is the world's largest art museum and a historic monument in Paris, France, and is best known for being the home of the Mona Lisa. Approximately 38,000 objects from prehistory to the 21st century are exhibited over an area of 72,735 square meters (782,910 square feet). Due to the COVID-19 pandemic, the museum was closed for 150 days in 2020, and attendance plunged by 72 percent to 2.7 million. Nonetheless, the Louvre still topped the list of most-visited art museums in the world in 2020. Louvre was established in 1792 and it is the ranked number 1 for this top 10 list of the largest museums worldwide.
Louvre Palace, Pavillon Turgot & Richelieu wing. Paris, France., Jebulon

References:
πŸ‘‰ Houston Museum of Fine Arts, Wikipedia.org
πŸ‘‰ Victoria and Albert Museum, Wikipedia.org
πŸ‘‰ National Museum of Anthropology, Wikipedia.org
πŸ‘‰ Royal Ontario Museum, Wikipedia.org
πŸ‘‰ Tokyo National Museum, Wikipedia.org
πŸ‘‰ Vatican Museums, Wikipedia.org
πŸ‘‰ Metropolitan Museum of Art, Wikipedia.org
πŸ‘‰ National Museum of China, Wikipedia.org
πŸ‘‰ State Hermitage Museum, Wikipedia.org
πŸ‘‰ Louvre, Wikipedia.org
πŸ‘‰ List of largest art museums, Wikipedia.org