The cost to complete the cathedral, between 1842 and 1880, which was not an effort by the Catholic Church but by Protestant Prussia and the Cologne, Rhineland, and German citizens, amounted to US$1 billion in today's currency. Of this, one-third was paid by the State of Prussia, and two-thirds by the ZDV. Another US$1 billion was paid to "unveil" the cathedral, i.e. to purchase the houses around it and make it possible to view it from all sides; of this amount, half was financed by the ZDV. Much of the Verein's income derived from a special lottery, the
Dombaulotterie. Today, the annual budget of the cathedral, which amounts to appr. US$3,5 million, is financed by half by the ZDV. The income of the ZDV — US$5 million in 2021 — comes from membership fees, donations, bequests, fines (German judges can order that fines in civil cases are paid to the ZDV), and especially a federal lottery. Legally, the cathedral
belongs to itself, not to the
Catholic Church or the
Archbishop; not even to the
Metropolitan Chapter, which administers it based on the legal fiction that it has been charged with this by the cathedral. == Prominent members ==