Complex sentence: Stainless steel is used today in buildings because of this durability and the fact it is a weld-able building metal that can be made into aesthetically pleasing shapes, like the Art Gallery of Alberta in Edmonton, which is wrapped in stainless steel.
Split into simpler sentences: Stainless steel is used today in buildings because of this durability and the fact it is a weldable building metal that can be made into aesthetically pleasing shapes. An example of a building in which these properties are exploited is the Art Gallery of Alberta in Edmonton, which is wrapped in stainless steel.