Buildings take energy to heat them and cool them. No insulation means the heat or cool escapes to the atmosphere and wastes/costs energy (and money).
Haeting and cooling round buildings depends on the system and how it performs. Heating and cooling systems are not any easier to install in round buildings but are able to keep the environment cool or warm.
Cordoba and Baghdad both have cool buildings
It has been used to make many buildings in the US and it is a metamorphic rock
Because the people were too cool to build it
yes they did have stadiums
In most buildings in most developed countries that have cool climates.
geothermal power allows heat pumps to heat & cool buildings.
They are decoration for a cool farm. Also they give you a lot of xp compared to the decorations. So if your looking for xp, buy them.
Pros of mud buildings are having the material to build in site, the uniqueness, and the cool temperature in the heat. Cons are that it tends to smell funny and the walls will start to crumble if you don't reseal often.
Most explosions come from gas or methane leaks and as such are not controlled. They can hardly be called "cool" when they destroy buildings and take human lives. Even controlled explosions can malfunction, causing injuries and deaths.
Insulation allows buildings to retain heat or to reduce the heat coming into the building. This helps to preserve energy resources by reducing the amount of energy needed to heat or cool the building.