This swimming site is local to Spain and is entirely in Spanish. From what I can make out, there is a fair amount of information about events and a good links page for other Spanish organizations. There are good sections on coaching, training and competitions. In addition, you can find links to other Masters sites. The site is large and has loads of useful information, such as a library, news and a store.
Links are both national and international and include a category on the Olympics.
This is the Canadian site for the Masters program. The program is designed to encourage fitness through swimming. The site features useful provincial and international links. Swimming events meetings are listed for Canada only. At this volumous site you can get diving competition results, news and e-mail.