What's the most boring book you've read this year and why?

For me it's The Willow King by Meelis Friedenthal.

Very boring but it did leave a strong impression. I've read it in my native language, it's translated as The bees, and I think that the English title suits it better and it probably has an impact on the overall feeling.

The story has few loose ends and it bothers me. On the plus side, the reader can get a good idea of what was like to live in the 17th century.