Here's a couple of ideas I sent to someone else recently.
Basically the centre of Vienna, known as the 1st district sits inside a ring road. In here there's plenty to see and do. I'll just list a few ideas both here and a little outside it and you can ask for more info if you wish.
Sight-seeing...I'll start with a walk beginning at the Cathedral in Stephansplatz
Stephansdom...big cathedral slap bang in the middle of the city. Worth and visit and worth doing the walk up the spiral staircase to the viewing area high above. Check out the photos on the building opposite the south wall of the cathedral showing what it looked like after it had been bombed during the war.
From here you can wander down Kartnerstr (lots of shops) to the end where you will find the Vienna Opera House. In all my time there and subsequent visits back I have never been inside. Shame on me. Before you get to the Operahaus on the right hand side you'll find a chocolate shop which specialises in Sachertorte. It'll blow your mind! Sachertorte is to chocolate what a threesome with the Jessicas, Alba & Simpson, is...in my head anyway.
Now walk along the ring past the Burggarten which has a statue of Mozart and a flower bed in the shape of a treble clef...good for photos. Continue on to the entrance to the Volksgarten and head inside, through the Hofburg and out the other side to the Roman ruins. The Spanish Riding School is just over to your right now on Reitschulegasse 2. I've no idea of the opening times or that kinda thing but you'll find it easily on the interwebby.
Double back to Michaelerplatz and head down Kohlmarkt to the end and right again onto Graben. Then you're straight back up to Stephansplatz again. Tis an enjoyable walk of just over 2.5km. See here for a map of the route...
http://www.gmap-pedometer.com/?r=1599463For shopping, the streets I just mentioned are pretty good and contain most of the fancy designer stores. For more realistic shopping your best bet is to head to Mariahilferstr. Starting at the Museumsquartier u-bahn stop it is packed with shops & department stores for about 1.5km. My favourite store there is Peek & Cloppenberg. See link for route
http://www.gmap-pedometer.com/?r=1599474Places I can recommend to eat at...
The Gulasch Museum
http://www.gulasch.atPürstner - I recommend the Ratsherrenpfanne, it's fantastic
http://www.puerstner.comFiglmüller - for the biggest schnitzel you've ever seen
http://www.figlmueller.atPubs to visit
First of all there is an area known as the Bermuda Triangle (Bermudadreieck) which basically consists of a little area packed with bars. See here:
http://www.gmap-pedometer.com/?r=1599487. Go to Zum Kuchldragoner which is about halfway up Seitenstettengasse. The owner, Ronnie, is a great guy and so long as he's not mental busy he'll look after you well. Other bars in that area worth a visit are Krah-Krah and Bermudabräu at the bottom of the hill (you'll understand when you get there). If you fancy a snack, order a Mailänder Toast in Krah-Krah. You won't regret it. Also, I can't remember the new name but there's a bar beside the Slammer Bar which is worth a visit. In the door and downstairs it opens out into a MASSIVE cellar bar. A bit on the young side at the weekends in my opinion but worth a looksee just for its sheer size. There are plenty of others you can poke your head into and see if you fancy them.
Flanagan's Irish Pub - Run by a bloke called Alan who's a top bloke.
http://www.flanagans.atCharlie P's Irish Pub
http://www.charlieps-irishpub.at1516 Brewing Company - across the road from Flanagan's. They brew their own beer, nuff said.
Kolar bar on Laudongasse - funky little cellary place...order a Fladen if you're hungry, they rock!
http://www.kolar-beisl.at/3kontakt.htmlCentimeter - there are 7 of them in Vienna. Always good fun and some quirky stuff to order, like a wheelbarrow full of food or your own tap at the table.
Lots and lots more I can tell you but would need a better idea of what you are interested in.