Museums are permanent, non-profit institutions, serving public needs, using open nature, by doing collecting business, conserving, researching, communicating, and exhibiting real objects to the people for study, education, & pleasure needs. Therefore, he can be a study material by academic circles, documentation of the peculiarities of certain citizens, or documentation and imaginative thinking in the future.From 1977, May 18th was celebrated as International Museum Day. 
The existence of the museum is very important because it has a responsibility and function to preserve, foster, and make the culture of good citizens who are tangible and intangible. Through messages assembled through displays and exhibition halls, museums in Indonesia serve as a means of communication and a connecting bridge that can trigger awareness and knowledge for the community. [two]
The existence of museums in Indonesia as very important considering that museums not only have a function as protectors of cultural heritage objects, but also become a place for the formation of ideology, discipline, and knowledge development for the public. This is also affirmed in the ICOM code of ethics, “Museums have a crucial task to share educational activities and attract visitors more broadly according to the community, locality, or the gangs they serve. Interaction with the supporting community and the training and promotion of the heritage that belongs to it is an integral part of the education that must be carried out by the museum. [3 original edits]
Etymologically, the museum is from according to the Greek word, Μουσεῖον or mouseion, which actually refers to the name of the temple to the nine Goddess Muses, children of the God Zeus who symbolized science and art.  Other buildings known to be associated with the museum’s history are part of a complex of libraries built specifically for art and science, especially philosophy and research in Alexandria by Ptolemy I Soter in 280 BC. [five]
Museums are evolving as science develops and people increasingly need authentic evidence of cultural historical records.
In Indonesia, the first museum built is the Radya Pustaka Museum.  In addition, the Elephant Museum is also known to be the most complete collection in Indonesia, Wayang Museum, Persada Soekarno, Textile Museum and National Gallery of Indonesia which specifically presents the latest collection of Indonesian art.
At first, museums began to be a place to store collections belonging to individuals, families or wealthy institutions. The objects stored are generally works of art and rare objects, or collections of natural objects and archaeological artifacts.
Some museums in the world, including:Capitoline Museums, a museum with an art collection devoted to the oldest public in the world, began in 1471 when Pope Cyclotus IV donated a collection of antique sculptures to the people of Rome.The Vatican Museum, the second oldest museum in the world, was opened for unmum since 1501 by Pope Julius II.Rumphius created a botanical museum in Ambon in 1662, making it the oldest museum in Indonesia. There is nothing left based on the museum, except in the book he wrote himself, which is now the library collection of the National Museum of Indonesia. Its successor was the Royal Association of Arts and Sciences in Batavia, which was built on April 24, 1778. The organization established a museum and library, and played an important role in the research, & collection of research materials on natural history and culture in Indonesia. The British Museum in London, England, was founded in 1753 and opened to the public in 1759. Sir Hans Sloane’s private collection is the basis of the British Museum’s collection.The Hermitage Museum was built in 1764 by Catherine II based on Russia and has been open to the public since 1852.The Louvre Museum in Paris France, a museum also housed in the former royal palace, was opened to the public in 1793.Type[source edit]
Museums have a plurality of types, from large institutions spanning many categories, to mini-institutions that focus on an exclusive subject, location, or person. In addition, there is still a universal museum whose collection represents the world and generally the collection includes art, science, history and natural history. The type and size of the museum are reflected in its collection. A museum generally has a core collection that is the most important object in its field. Categories of museums earlier in the original edit]
An archaeological museum is a museum that specializes in displaying archaeological artifacts. Poly archaeological museum which is an open-air museum (a museum contained in an open space or Open Air Museum). In Indonesia, an example of an archaeological museum is the Trowulan Museum in the original edit]
An art museum, better known by the name of an art gallery, is a room for exhibitions of art objects, starting according to visual art, namely paintings, drawings, and sculptures. Some other examples are ceramic art, metal art and furniture.
An example according to this art museum in Europe is the merbach-Cabinet in Basel, which was originally a direct collection sold to the Basel city government in 1661, and became a museum for the public since 1671. Today, the museum is called Kunstmuseum Basel. 
A museum that specializes in being an art museum is a new thing. One of the first was the Hermitage Museum in Saint Petersburg which was built in 1764.
In Indonesia, an example according to the art museum is the Affandi Museum located in the source edit]
A biographical museum is a museum dedicated to related objects using the life of a person or group of people, and sometimes displaying the objects they collect. Some museums are located on houses or sites related to the person concerned in when he lived.
An example based on this museum is the Edith Piaf Museum in Paris. In Indonesia, an example of a biographical museum is the Sasmitaloka Museum of The Great General dr. A.H. Nasution located in Central Jakarta, DKI Jaya.Museum children.
The Buell Children’s Museum in Pueblo, Colorado is the second-ranked children’s museum in the United States by Child Magazine. 
A children’s museum is an institution that provides exhibition objects and event programs to stimulate the informal experience of children. Contrary to the museum of tradition; Which has rules not to touch exhibition objects, this museum usually has objects designed for children to play. Children’s museums are mostly non-profit organizations and are staffed by volunteers or professional staff in small numbers.  An example of this children’s museum is the Kolong Tangga Children’s Museum located in Yogyakarta. In this museum there are still some traditional children’s toys. Universal museum[original edit]
The universal museum or known in English as the encyclopedic Museum, is a museum that we commonly encounter. It is usually a grand institution, which is national, and puts a message to visitors about various variations based on local and global themes. This museum is crucial because it raises a sense of curiosity towards the world. 
An example of a universal museum is the British Museum in edit source]
Ethnology Museum is a museum that investigates, collects, treats, and exhibits artifacts & objects that are herbi ethnology & anthropology. Museums like this are usually built in countries that have ethnic groups or ethnic minorities that number poly.
An example according to this museum is the Indonesian Museum in TMII.Museum historic houses[edit source]
Historic house museums, or better known as using historic houses are the most in number in the global of the category of historical museums. This museum usually operates with limited funds and few staff. Most are staffed by volunteers and often are not qualified to become a professional museum.
An example according to this historic house in Indonesia is an original edit]
The history museum encompasses historical knowledge and its relation to using the present & the future. Some of these museums have very compound collection objects, starting based on documents, artifacts in many forms, historical objects related to the historical event.