Otherwise much of the remainder of the commons is a subterranean aquifer.
"Wikipedia"
Using filters and ventilation systems the Clough Commons reduces the amount of carbon dioxide present inside the building, thus creating a healthier indoor environment for users.
"Wikipedia"
(Stormont House was nominally the residence of the Speaker of the House of Commons, but as speakers chose to live elsewhere, Prime Ministers used it as their residence, and turned their official residence, Stormont Castle, into an office for their senior
"Wikipedia"