What German beers are similar to Belgian abbey beers? I visit Germany a lot (Augsburg, Bavaria) and I can't seem to find a beer that would be similar to Belgian beers, for example to Grimbergen blonde.

So far the closest I've come is kellerbier but still it's nothing like a Belgian beer. 

Is there some beer type or specific brand that manufactures beer similar to Belgian ones?
You can't find a German-style beer that is similar to Belgian beer (as Germany-style beers are low fermented ones, while Belgian beer are top fermented ones).
But recently it has become easy to find a German brewery that brews a Belgian beer, e.g. Camba, as well as some IPAs and stouts.