Next Saturday we will be in Bern, Switzerland, for the 57th World Congress of Chess Composition, WCCC.
There will be solving contests and many composing tourneys.
The schedule is here: http://www.kunstschach.ch/wccc2014/docs/WCCC_Schedule.pdf
For the solving contests (there is one OPEN solving contest and also the world championship WCSC) you must have physical presence in the rooms of WCCC, but for the composing contests this is not necessary.
There are tourneys that accept entries from all over the world via e-mail, as well others only for WCCC participants. Details here.
Best wishes for success to solvers, to composers, to organizers!