What’s a structure?

 A structure is a group of elements somehow united to support a load with stability.  

Everything has a structure.

For example: humans have skeleton, bicycles have a frame, houses have columns, beams and a roof.

Structure exercise in you notebook

Try to draw the following structures in your notebook. The structures / buildings shown below are famous and well known. Write the name of each structure / building under each picture. If you cannot think of the name of the structure / building, write the name of the country you think it is in.