Preservation tells the stories of extraordinary buildings and sites all over the world.

Then someone asked why didn't I start an organisation selling extraordinary buildings?

Samarra, once briefly a dynastic capital, has extraordinary early Islamic buildings.

This is an extraordinary, granite-hewn building which gives the impression that it's an organic creation of the landscape.

Still standing, this extraordinary building is now a church.

"It happens to be a beautiful, extraordinary building in our portfolio that we have no use for," she said.

Not only is the building extraordinary but so too are her collections, if only because of their breadth.

Madam President, I do not want to criticise but to praise the people who put together this quite extraordinary building.

What also gives this extraordinary building new significance is the inescapable feeling that it was built at just the right time.

An extraordinary building, it's something of a Tardis: small on the outside, drawing you into a dark universe.