Even in out tiny country Kingdom of the Netherlands (aka Holland) every city and region has dialects).
What I find special is that if I watch a Scandinavian TV serie (Danish, Swedish, Norwegian etc) I can understand a lot of words, that are the same or similar to us.
German we understand because Dutch is a "low German" language.
English is very similar to the Frisian language, the language of our region Friesland.
Most Dutch speak and understand English because we have many English TV series and subtitled to Dutch.
G.