Information for tourists can be found here:
Florian Gate and city walls, the green belt around old city (Planty). See e.g. wikipedia, Floarian Gate
Wawel Royal Castle, see www.wawel.pl
Czartoryski Museum (incl. oriental art, Leonardo da Vinci's "Lady with an ermine"). See www.czartoryski.org
Salt Mine in Wieliczka (13 km from the center of Krakow). See www.kopalnia.pl and www.muzeum.wieliczka.pl
The Wieliczka Salt Mine will be visited during the Coference excursion on the afternoon Wednesday, the 8th of April