The Pillars of the Earth. - Actually very good.
From the web:
The Pillars of the Earth is a historical novel by Ken Follett published in 1989 about the building of a cathedral in Kingsbridge, England. It is set in the middle of the 12th century, primarily during the time known as The Anarchy, between the time of the sinking of the White Ship and the murder of Thomas Becket.
Be sure to read the sequel “World without end” which I believe is still in hardcover. It involves the years in Kingsbridge (200 years or so after Pillars) when the Plague was wiping folks out all over Europe.