As for boar, I've lived in a house near the forest and never saw one but saw evidence of them
They come down my street (near Kampinoski Forest) sometimes. In big groups (wild boar live in female/kids groups; adult males are solitary) snorting loudly. This only happens at night and in late winter when they're short of food. They've been photographed as far into town as Metro Młociny or even further.
It's great to see them, as long as you don't get too close.
they prefer to avoid humans.
Very much so. They start snorting since they're spooked by us. They're also quite stressed since seeing buildings roads and gardens is a long way outside their comfort zone. Like wolves, they're more afraid of us than we are of them.