pavilion

noun

• a building or similar structure used for a specific purpose, in particular:
• British a building at a cricket ground or other sports ground, used for changing and taking refreshments.
• a summer house or other decorative building used as a shelter in a park or large garden.
• used in the names of buildings used for theatrical or other entertainments:the resort’s Spa Pavilion
• a detached or semi-detached block at a hospital or other building complex: the form of alternating pavilions also allows the site to be developed in depth
• a large tent with a peak and crenellated decorations, used at a show or fair.
• a temporary building, stand, or other structure in which items are displayed at a trade exhibition: they designed the British pavilion at Shanghai World Expo 2010