"A Town Like Alice" was a great read. So was "On the Beach." Nevil Shute is a hidde gem for much of the English speaking world, even though he was Australian.
My two most memorable reads were "Watership Down" by Adams, and "Demian" by Hesse.
But, I'm on a roll, so here are some other books that I really enjoyed:
"The Mysterious Island" by Jules Verne
"The Count of Monte Cristo" by Alexandre Dumas (who was of African descent, by the way; not many people know that. So were Samuel Taylor Coleridge and Alexander Pushkin.)
"Cat's Cradle" by Kurt Vonnegut, Jr. (super smart and funny)
"Franny and Zoey" by J. D. Salinger.
These last two are my all time favs.