In Europa exist only a few galleries specialized in male-art.
Except galerie MooiMan the following galleries can be found:

Kunstbehandlung in Munich
Au Bonheur du Jour in Paris
Galerie Newman in Berlin.

You can find their websites by clicking on the links below.
Kunstbehandlung
Au Bonheur du Jour
Galerie Newman

Of course you can find some male-art in a lot of galleries and in online galleries.
But for a large choice visit these three galleries.

When you are in Amsterdam we recommend you to visit PinkPoint near the Homomonument and Westerkerk, Westermarkt Amsterdam.

And visit online bookshop Vrolijk.