"Are you sure that they even need one of this scale, your eminence?" ventured Gallo. 
"What do you mean?" his master shot back.
"Well, it's just that Acropolis is actually quite a small settlement... It hasn't existed long enough to have that many dead citizens."
"And why should that matter?" the Canon responded. "Every devotee of the Underlord deserves to have his death respected and honoured in style."
"To be quite candid, your eminence, up until this point most of those who have died have been sailors. They have been buried at sea after the custom of Poseidon."
"Ugh," Canon François responded. Monsieur Gallo knew that he was not fond of the other Aplynician Brothers muscling in on Hades' responsibilities. "The value of the Brick Seas is not in its waters; still less in it's vapours. It is in the blessed dirt. We must remind people of that fact. And how better to do so than with a mausoleum of spectacle?"
And, with a shrug, Gallo was forced to concede the point.  Unless anyone has any objections, this mausoleum will be licensed as a medium Arts and Culture in Acropolis.