Chocolate addicts beware, this unmissable place in Habana Vieja's heart is a lethal dose of chocolate, truffles and yet more chocolate (all made on the premises). Situated – with no irony intended – on Calle Amargura (literally, Bitterness Street), it's more a cafe than a museum, with a small cluster of marble tables set amid a sugary mélange of chocolate paraphernalia.

Not surprisingly, everything on the menu contains one all-pervading ingredient: have it hot, cold, white, dark, rich or smooth – the stuff is divine, whichever way you choose.