You could tour the world based on the quest of finding all the ways people treat the seeds of the coffee plant--and how they serve those seeds after they've been ground up and transformed with boiling water.I've had coffee roasted in a wok on a stove in a Nicaraguan hut and served in a big mug as well as the tiny cups of coffee essence served up in some of Turin's famous cafes, like the Baratti & Milano.
Coffee houses the world over seem to be genuine places geared toward the pursuit of personal pleasure mixed deliciously with a smattering of the arts. Vienna comes immediately to mind.
The Cafe Traveler has put together a very attractive and highly focused iOS app designed to guide you to those elegant cafes in Vienna that aren't exactly on the tourist track--and we recommend it. See our review: Vienna Cafes: Cafe Traveler's Guide to Vienna App.