List of convention and exhibition centers
Russia
Russia
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* [All\-Russia Exhibition Centre](/wiki/All-Russia_Exhibition_Centre "All-Russia Exhibition Centre") ([Moscow](/wiki/Moscow "Moscow"))
* [Crocus Expo](/wiki/Crocus_Expo "Crocus Expo") (Moscow)
* [Expocentre](/wiki/Expocentre "Expocentre") (Moscow)
* [Makaryev Fair](/wiki/Makaryev_Fair "Makaryev Fair") Exhibition Hall ([Nizhny Novgorod](/wiki/Nizhny_Novgorod "Nizhny Novgorod"))
* [Moscow Gostiny Dvor](/wiki/Moscow_Gostiny_Dvor "Moscow Gostiny Dvor")
* [Moscow Manege](/wiki/Moscow_Manege "Moscow Manege")
* [Saint Petersburg Manege](/wiki/Saint_Petersburg_Manege "Saint Petersburg Manege")
* [Sokolniki Exhibition and Convention Centre](/wiki/Sokolniki_Exhibition_and_Convention_Centre "Sokolniki Exhibition and Convention Centre") (Moscow)

Why are exhibition halls built with multiple event spaces?