2 main landmarks to see is castle on the hill and Mozart’s house.

Hohensalzburg Fortress (big one on top of the hill) 
Opened: 9am-7pm (last entrance 30min before closing)
Fee: 11.30 EUR with funicular and 8 EUR without. (walk up to the fortress (incl. descent)can be obtained at the “Sperrbogen” 
(entrance of the fortress courtyards) 
Built in 1077 by Archbishop Gebhard, considerably enlarged by Archbishop Leonhard von Keutschach (1495-1519), largest, fully-preserved fortress in central Europe. The medieval princes' apartments and the Fortress Museum are of particular interest. fortress also served as military barracks and a prison. Since 1892 the fortress can easily be reached by funicular railway departing from the Festungsgasse. 

Getreidegasse 
Wander through the cobbled Grain Lane where each store has an old-fashion style shingle and the window fronts are designed to look like they would have looked 100 years ago.

Mozart’s Birtplace (Number 9 Getreidegrasse) 

Mirabellgarten 
Much of the song 'Do Re Mi'from the Sound of Music was filmed at the Mirabell Palace Gardens, which  was designed in the 1600s and again in the 1700s. The Pegasus Fountain dates back to 1913 and the 17th century statues around the fountain represent the four elements. Other features of the gardens include the 18th century Hedge Theatre, the Dwarf Garden and the Orangerie. The gardens are open from 6am to dusk and entrance is free.


Free WLAN hotspots in Salzburg
Free acces sto the World Wide Web via WLAN is now available at the following many locations in the city of Salzburg. The password "Salzburg.surft!" will connect you with www.salzburg-surft.at , your gateway to the Internet. The WLAN network automatically switches off between midnight and 5:00 a.m.
 
• at the riverbanks of Salzach, around Mozartsteg (Mozart Bridge)
• at the riverbanks of Salzach, around Makartsteg (Makart Bridge)
• on Mozartplatz
• at Volksgarten
• at Mirabell Gardens
• on Max-Reinhardt-Platz
• at Bricks Music-Bar, Lederergasse
• at the public library Stadt:Bibliothek 'Neue Mitte Lehen'
• Jugendzentrum IGLU
• Jugendzentrum KOMM
• Jugendzentrum Lehen
• Jugendzentrum Taxham
• Kapitelplatz
• Kajetanerplatz
• Boulevard im Stadtwerk Lehen
• Teile von Hof und Park im Schloss Hellbrunn
• Hans Lechner Park
• Schallmoos Bewohnerservicestelle