Belgium has a long and rich brewing tradition. It is a country the size of Maryland, but brews 700-800 different labels! It is a part of their culture and there are many things that make Belgian beers unique:
Almost all beers are served in their own, specially designed glasses to optimize their taste.
They are incredibly diverse and have a lot of different ways of producing beers (spontaneously fermented, second fermentation, etc.).
Towns throughout the country have their famous beer pubs, with storied histories and a huge variety of offerings.
There are lots of specialty beer shops and festivals. Belgian beers are commonly found in wired and corked like champagne bottles (making them good presents).
By the way, Belgium is the home of the largest brewery in the world, InBev. You may have heard of them a couple of years ago when they bought a little company called Anheuser-Busch that makes Budweiser.