The importance of Gmunden dates back to the celts.
The Traunsee - Already the romans called the deepest lake of austria (204 m) Lacus Felix "The happy lake".
It was a very necessary settlement point from the 11. century. Gmunden had got a key terminal over the hundreds of years for prosperous in salt trade at that time.
Gmunden was made to town in 1278 AD and declared to "spa-town" at 1862  AD.
In the 19. century Kaiser Franz Josef routinely guested in here to the Royal House of Hannover. Before he has driven towards in his summer residence Bad Ischl. By  this time, the high european aristocracy came to Gmunden.
At that period a lot of bohemian came to Gmunden too, like Brahms, Schubert, Strauß, Lenau, Lehar, Hebbel or Peböck.
In the last century the well heeled liked to come and enjoyed here the summer retreat.  They taked a kure and relaxed with their like-minded persons.
A lot of memorials and 9 castles like Land- and Seeschloss Ort, Schloss Weyer, Freisitz Roith, Schloss Ebenzweier, Schloss Traunsee (Württemberg), Schloss Mühlwang and the residenz of the Hannoveraner Schloss Cumberland are between Gmunden and Altmünster and it gives evidence in the popularity of this region.

Very distinctive is the town hall square. It is the only city-plaza in austria which is directly at the lake.
At the town hall (16 century) you can here in summer ceramic bells chime. The bells are from the famous manifacture Meissen.
The historic city with it's late gotic houses and the small courtyards are pretty to watch. Very popular is a walk at the esplanade near the lake.
When you go by the ship "Gisela" you are on board at the oldest active paddlesteamer (built 1871) in the world. Shipping is on Traunsee since 1839.
In 1836, the oldest horse-drawn railroad in Europe "Gmunden - Budweis" starts it's service. Gmunden-Englhof is the oldest train station from austria.
Last but not least, the main attraction is the landmark Gmundens, the castle Orth, mentioned in a document 909 AD as "Veste" (this means fortress).
A liked TV serial were produced in 1996 (8years long). The name was "Schlosshotel Orth". Loved doveys like to marry there in a little church.
Every year a lot of film productions are made here because of the beautiful panorama, the lovely places and sights.

Gmunden is THE Ceramic city and has it's world wide good name because of one of the oldest middle european manufactorys,
the "Gmundner Keramik" (since 1492). Nearly everybody knows the "greenflamed" decor. In the Kammerhof Museum
(k-Hof) is a permanent exhibition "Klo and so" - everything about the historic lavatory (objects from the sanitary firm Lauffen).

Cultur has a high significance here. Ateliers, studios and gallerys indicates Gmunden as  a spirited and manifold town ((Kunstforum, K&K Keramik,
CDK Keramik, Vetseva Keramik, RaumSchauEck, 10erHaus, Galerie 422, Pahl, Cigler, Halder, Obermayr, Kienesberger, Kreuzer, Graf, Barix).
In the old local theatre there aren't only music acts, readings, or theater productions at the "Salzkammergut Festwochen", it is a cinema too.

Arrangements:

Salzkammergut Festwochen (zu Ostern und im Sommer), Ostermarkt, Traunsee Segelwochen, Frühlingsball der Traunseewirte, Schiffsländefest, Bergmarathon,
Countryfest, Weinfestival im Schloss Orth, Hafenfest, Mondscheinbummel, Lichterfest (mit Riesenfeuerwerk), Töpfermarkt, Sylvesterfeuerwerk.
Traditions: Glöcklerlauf, Liebstattsonntag, Maibaumaufstellen, Christbaumtauchen, Schlösser Advent, Perchtenlauf, Kripperlroas.
Miscellaneous: Kabaretts, Musicals, Lesungen, Modeschauen, Kinderfeste, Märchenerzählen, Zugsnostalgiefahrten.
Eventplaces: Kammerhof Museum, Rathausplatz, Toscana Kongresszentrum, Bezirkssporthalle, Eishalle, Tennishalle, WKO.

I can't underwrite that it is completeness. The best is you look in the web (www.goggle.com, www.traunsee.at ) or you make a call to tourism office 07612/74451
If you have questions, I help you gladly as good as I can do.