Other than the totally incomprehensible languages, those using different alphabets, I find German amazing forstringingwordstogethertomakeonelongone.
You must read this little gem by Mark Twain then: To give you some flavour and wet your appetite (it's hilarious): “An average sentence, in a German newspaper, is a sublime and impressive curiosity; it occupies a quarter of a column; it contains all the ten parts of speech — not in regular order, but mixed; it is built mainly of compound words constructed by the writer on the spot, and not to be found in any dictionary — six or seven words compacted into one, without joint or seam — that is, without hyphens; it treats of fourteen or fifteen different subjects, each inclosed in a parenthesis of its own, with here and there extra parentheses which reinclose three or four of the minor parentheses, making pens within pens: finally, all the parentheses and reparentheses are massed together between a couple of king-parentheses, one of which is placed in the first line of the majestic sentence and the other in the middle of the last line of it — after which comes the VERB, and you find out for the first time what the man has been talking about; and after the verb — merely by way of ornament, as far as I can make out — the writer shovels in “haben sind gewesen gehabt haben geworden sein,” or words to that effect, and the monument is finished.” and “You observe how far that verb is from the reader’s base of operations; well, in a German newspaper they put their verb away over on the next page; and I have heard that sometimes after stringing along the exciting preliminaries and parentheses for a column or two, they get in a hurry and have to go to press without getting to the verb at all.”