Mrs. Dalloway
Mrs. Dalloway by Virginia Woolf is possibly the most eccentric novel on this list, describing exactly one day in the life of a British socialite named Clarissa Dalloway. The novel employs a stream-of-consciousness style throughout, employing a combination of third-person narration and the thoughts of various characters. This style results in a deeply personal and revealing look into the minds of the characters, with the novel relying heavily on character rather than plot to tell its story.
Characters' thoughts include constant regrets and thoughts of the past, their struggles with mental illness and post-traumatic stress disorder from World War I, and the effect of social pressures. The novel's distinct style, subject matter, and historical setting make it one of the most revered and regarded works of all time.
Link to read: goodreads.com/book/show/14942.Mrs_Dalloway