Vienna’s most venerable café commands a queue to rival any London hotspot. Opened in 1876, this typical Viennese Kaffeehaus has always been a favorite with brainy locals; Freud, Trotsky, and Stefan Zweig are all known to have taken their coffee here. Its cathedral-like domed ceilings and accomplished patisserie selection are just as much of a draw now as they were then. Waiting in line may be a bore, but once you’re inside, the glittering décor and world-class cakes and pastries make it all worthwhile. Feeling peckish? Tuck into fluffy pancakes or warm Apfelstrudel dusted with icing sugar, and pick up some custard-filled Cremeschnitte slices to take away.