So today, having already found out a fair bit about the physical geography of Iran, Yazd presents us with a good opportunity to find out something of the human geography of the country. ... except, as we will see see, the human geography is often dictated by physical factors
The aerial photo above shows a tiny corner of this city of over 433,000 people. That makes it more or less the same size as Edinburgh! Even this tiny part of the city shows buildings constructed to create maximum shade in inner courtyards. As the temperature figures for Yazd reveal - 40 degrees is not uncommon in summer - shade will be at a premium. Traditional architecture responds to this climate as this article from Wikipedia explains. Many of the buildings in Yazd benefit from a type of natural air conditioning called windcatchers and are supplied by water from underground sources via qanats. Yazd is also one of the largest cities built almost entirely out of adobe mud bricks. Adobe has particularly good insulation properties and keeps buildings cool in summer but prevents too much heat from being lost in the cold winter months.
To get a really good impression of the architecture and history of the city, you might like to watch this video..
The narrator has a slightly tedious voice but the video is definitely worth watching! if the embedded version fails to play, click here.