Gallery (7 pictures): 21st century architecture is creating some of the most complex, hi-tech buildings in history.

It is also the most complex and modern building throughout Central America.

But real estate experts say many developers will soon be limping home after they discover how complex building in Europe can be.

It's a part of a complex building in which living quarters and storage rooms, as well as water cisterns were found.

Johnson Controls continued to develop new control technologies to help customers better manage their increasingly larger and more complex buildings.

The high walls and complex buildings that look more like fortresses then monasteries come much later.

It is also involved in tasks which involve planning of spatial movements, like planning one's way through a complex building.

This special training can include dealing with poisonous substances, operating in extremely complex industrial buildings and other similar tasks.

"I would venture to guess that this is the most complex residential building that I have ever seen," he told me.

It was a bit like viewing an immaculate blueprint for an extremely complex building.