'The Fabulous World of Jules Verne', an oldie but a goodie. Based on a minor Verne work called "Facing the Flag" and several other titles as well, it uses a strange animation technique that mimics steel engravings, with live actors. I saw it in the theater, way back when, but it holds up very well.
This may well be the greatest steam punk work of early days, phantasmagorical experience, and a lot of fun.
Czech animation is usually good, it makes a good double feature with 'Fantastic Planet' and a quietly mind bending excursion into the strange.
Too bad 'Street of Crocodiles' is so hard to find.