An art museum or art gallery is a building or space for the exhibition of art, usually visual art. Museums can be public or private, but what distinguishes a museum is the ownership of a collection. Paintings are the most commonly displayed art objects;

Although primarily concerned with providing a space to show works of visual art, art galleries are sometimes used to host other artistic activities, such as performance arts, music concerts, or poetry readings.

A letter is a written message from one party to another containing information. Letters promote the preservation of communication between both parties; they may bring friends or relatives closer together, enrich professional relationships and provide a means of self-expression.

A house is a building that functions as a home, ranging from simple dwellings such as rudimentary huts of nomadic tribes and the improvised shacks in shantytowns to complex, fixed structures of wood, brick, concrete or other materials containing plumbing, ventilation and electrical systems.

A letter is a written message from one party to another containing information. Letters promote the preservation of communication between both parties; they may bring friends or relatives closer together, enrich professional relationships and provide a means of self-expression.