You can buy a combi ticket that incudes MIni-Europe too but it was 23.95 euro each so we just did the Atomium this time as the weather was not brillent, showers and we have been to Mini Europe a couple of years ago.. It costs 11 euro each for the Atomiuim. There is a restaurant there but thats very expensive, so decided to leave that and spend the euros enjoying beers near the Grand Place, very enjoyable. :)