Comte de Lautreamont's Les Chants de Maldoror
One of the earliest and the strongest influences on the Surrealist writers, Lautreamont (real name Isidore Ducasse) wrote little and died very young. His enigmatic short life is intriguing like his mysterious 'prose-poem' about a deranged character 'Maldoror' who is against the Creator, is evil, horrible and sadistic. During his journey of destruction he comes across many things. He destroys the good and makes evil and beastly look saintly in comparison, until he finally comes face to face with the Creator...
John Cowper Powys's A Glastonbury Romance
This one is about Glastonbury and the surrounding country-side. The imagery is extremely vivid and many complex themes intermingle. A huge book, it is a rewarding read nevertheless.
Sadeq Hussain's The Blind Owl
(Download and read on your ereader.) This little novella is a real nightmare depicting decadence, desperation and depravity. No wonder the French loved its Iranian author and showered all kinds of honours at him. Very predictably, he ended his own life. If you like decadent, surrealistic, really SICK books, this one would fit the bill.