In War Unleashed there is a picture showing the architecture of three of the Countries of the Dzaa Empire. I thought i would give you some detail and insight into the buildings shown.

Looking at the picture here, as found in War Unleashed, on the left hand side we find the fat towers of the Piri, a culture that builds on the hills of a great savanna. The large towers are rounded or domed and can vary in size depending on the size and power of the family group. The structures date many years into the past and may are older than anyone can recall - certainly older by far than the Dzaa Empire on Edath, which has been around for over three hundred years.
Mud and stone form the building material of the Piri towers and for the most part the techniques used to raise them have been lost, modern counterparts being much smaller and compact.
Doorways and windows and halls are overly large for the Piri inhabitants and many halls lie empty - which it seems was always the intent. The rooms are therefore spacious and spread out within the towers.
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The middle of the picture above shows some Cerchae buildings built onto and into a tor side. A curving bridge arcs over the lip of a waterfall which drains a great lake high up on the tor. The lake is itself fed by a stream from higher up.
Rooves are commonly of thatch, sometimes of tile, and though the walls are mostly of stone, some wattle and daubing as exists. Breaking up the stonework are wooden beams, even where not exactly neccessary they often exist, such as in halls cut into the hillside.
Curving walls are a common feature in the old architecture, which like the Piri is over large. More recent additions to towns tend to be smaller in scope and more compact and often old spaces have been converted to house many more than they would have centuries ago.
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The last picture in the above illustration shows the tall towers of the Zeir, a country who live on the cliffs and banks of the rivers and estuaries of a great semi-desert in the middle west of the Empire. The towers are carved of stone, sometimes whole, other times of impossibly large segments. They incorporate gardens and allow for foliage to grow among, over and in them selectively - the Zeir are a botanically minded peoples, the banks of the rivers being lush.
Smaller buidings are domed, sometimes with rooms built over vaulted and open ground floors. These domes can encircle a courtyard, with straight enclosed passages connecting them. The large towers often have vaulted docks beneath them so that the rivers are directly accessible.
Outsides of buildings are commonly more intricate in their texture than for other countries of the Empire, with reliefs and regular forms used proflifically over the walls. Sometimes parts of these are painted, othertimes different coloured stone is inlaid.
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A common feature of architecture that predates the Dzaa Invasion is the largeness of it. This is often attributed to the granduer and ego of the Old Gods of these cultures. Some say that the Old Gods were themselves of greater stature than the subjugated species of Qai, Kes, Kro, Cur and so forth, and when they had the structures built they built them to cater for their size.