Zurich is the largest city in Switzerland and is of course a world famous financial center and has been repeatedly proclaimed to have the best quality of life anywhere in the world. The gay scene is surprisingly lively and diverse for a city of it's size. Pop. approx 1,200,000. Whilst it's not Swizerland's capitol city (that's Burn), it is the Gay Capitol of Switzerland. The gay area is located in the old part of town between the grand main station and the river bank. 
The Street Parade in Zurich is the biggest technoparade in Europe, comparable to Berlin's Love Parade. Its route leads along Lake Zurich. (The English name is used in German.) The Street Parade is as of 2006 one of the largest techno parties in the world and the largest annual event in Zurich.

June 8th to 17th. 2012 - Zurich Pride - Web site

Black Party - Web site
Kitch Party - Web site
LMZ - The Swiss gay motorcycle club - Web site
Love Parade - Web site
Arosa Gay Skiweek - Web site
ZVV - Zurich Transport Network - Web site (Click 'English' at the bottom)