noun:a room or building where works of art, such as paintings or sculptures, are exhibited for public viewing
The museum's modern art gallery attracted thousands of visitors each month.
noun:an upper floor or balcony in a theater or other public venue
She bought a ticket for a seat in the gallery to get a better view of the stage.
noun:a long, narrow, often covered passage or walkway, especially one connecting different parts of a building
The queen walked slowly down the long gallery of the palace.