As part of my course in sketching for 1st year architecture students I do the following exercise: They have to start in the street and give a very quick impression of what they see, and how the location is felt. Big modern buildings, passing people, views towards the market place.
Then they have to walk to the half open atrium; at the point where they feel they entered that space, they have to sketch what they see again. It's a public, semi closed area, with tall treelike columns, and an intricate glass roof. And shopwindows, bicycles etc
Then they have to proceed to one of the façades: a huge medieval grey stoned solid wall, with square solemn holes with frosted glass as windows. Again: sketch what they see and feel.
The same for the shopwindow next to it.
Finally they have to ketch the stones of the façade. Try to catch the rugged stones.
It's like zooming in from large urban space to urban details.
I tried to do it myself, 13 images, done in less than 30 minutes, including walking, finding the right spot, making pictures. About 2 minutes per image.
The series was made during a lunchbreak in early december. I wanted to come back a few days later to add colour, but...... the shop had a fire, and the atrium was closed for a few months.