It's a large strong building, built in the past by a ruler or important person or a noble to protect the people inside from attack.

• Castle

• Fort

• Prison

It's a large house that is the official home of a king, queen, or other person of high social rank

• Castle

• Palace

• Mansion

It's circular or oval area of ground around which rows of seats are arranged on a steep slope, for watching outdoor plays, sports, etc.

• Stadium

• Arena

• Amphitheatre

It's a very large and expensive house.

• Mansion

• Hut

• Barn

It's a solid object with a square base and four triangular sides that form a point at the top.

• Tower

• Pyramid

• Skyscraper

It's a military building designed to be defended from attack, consisting of an area surrounded by a strong wall, in which soldiers are based.

• Police station

• The Pentagon

• Fort/Fortress

It's a building with a roof and sides made of glass, used for growing plants that need warmth and protection.

• Greenhouse

• Barn

• Garden

It's a very tall modern building, usually in a city.

• Hotel

• Skyscraper

• Apartment

It's a small house made from tree trunks.

• Tree house

• Cottage

• (Log) Cabin

It's a tall building near the coast or shore with a flashing light at the top to warn ships of rocks and other dangers.

• Lighthouse

• Harbour

• Port