Hi,
We adore Munich, so much that on each of our last two European vacations we parked ourselves there for a week-long stay.
You quite rightly note that much is closed on Sundays, but there is still so much to do!
Check the local calendar -- there are plenty of English language sites with great information. It seems that there are festivals all the time -- on our last trip we took part in the city's birthday celebrations which were unlike anything we've ever experienced here at home.
Visit a Beer Garden -- there are many to choose from, depending on where you are staying. There is the large and popular one in the Englischer Garten. And of course there's the most touristy, but always fun, Hofbrauhaus right downtown.
But I would also recommend Augustiner, on Arnulfstrasse (just a couple of tram stops away from the Hauptbahnhof, the train station). We loved that we could sit and enjoy ourselves at a table while our daughter played at the nearby playground.
And the entire family joins me in recommending Hirschgarten, at the top of hill on the same tramline. Public transit in Munich is excellent. Get off at Kriemhild and you are only a few blocks away. It's reputed to be the largest beer garden in the city, and features acres of parkland as well as the beer garden itself, a table service restaurant (with great food!) and a cafeteria-style food service area as well. There are deer (hence the name, hirsch) and plenty of room to lounge around, or stroll the grounds.
There are plenty of museums to consider as well. In the same area (about two or three tram stops away) is Schloss Nymphenburg, once the "summer" palace for the royals. It's stunning -- beautiful grounds, and so so many buildings to tour, including the main house, the carriage house (with Mad King Ludwig's never-used wedding coach), pottery, hunting lodge, and more. On one trip we stayed just blocks away, and strolled the grounds each evening with our daughter. We brought along a frisbee and ball for catch.
The Deutsches Museum on the other side of town is also worth a trip -- you could spend hours here, however, so it's best to figure out what part might interest you most and just focus on those exhibits. The last time we were there, we spent a lot of time in the aerospace and maritime sections.
And I'd recommend the trio of art galleries -- the Alte, Neue and Moderne Pinakothek. Fabulous art treasures -- and each one is actually easy to do in about 90 minutes if you're strapped for time.
The Residenz museum downtown, just behind the Marienplatz, is also worthwhile.
If you're really stuck for somewhere to eat, we also recommend the train station. There's always food available, and you'll be surprised and how good some of those sandwiches and other delicacies are!
Then for a day when everything is open ... again, so many choices. But one of the things we recommend to anyone who asks is to take Mike's Bike Tours. It's a great way to see the city at a slower pace, take in the highlights (including the Englischer Garten for a beer and even a chance to swim in a fast-running stream).
Then after the tour, I'd just walk around the pedestrian zones downtown and get in some shopping -- Kaufhof of course, but also look for discounts at C&A. There are great shoe stores in the area, plus you can slip into Dahlmeyer to see amazing chocolates and foodstuffs and coffee!
I'd sit at one of the tables lining the Marienplatz and enjoy a nice cold beer -- or head just a few blocks to the east to the Viktualienmarkt (food market) to sample some great cheese, seafood, sausages and beer! There are great deals on a variety of European wines, too.
After all the go-go of your
ABD trip, you might want to just chill and stay in town. I do hope you have a fabulous vacation. There is just so much to see in Germany -- perhaps it will whet your appetite for a return visit someday!