The Hypogeum brought in €520,360 from 22,461 visitors in 2017, according to Culture Minister Owen Bonnici.
The expenses for the site were only €378,924, representing net income of over €140,000.
And that only represents eight months of income as the site was re-opened to the publicin May 2017 after a €1 million project co-financed by Norway.
Read: Ħal Saflieni Hypogeum reopens
Read: Visitors’ centre at Hypogeum gets revamp
The minister was replying to a parliamentary question by MP Carmelo Mifsud Bonnici.
Dr Bonnici also advised that the Neolithic temples at Tarxien were visited by 67,638 people, of which 488 were primary school students. This generated €326,446.38, and helped to pay the €185,897 in expenses.