A short drive to Kobarid, where you'll
find the excellent Museum dedicated to the Soča Front.
Drive in the opposite direction to the Kluže fortress
and onward to Predel.
Boutique hotel with a lot of history in its furnishings.
Museums in Ljubljana:
National Museum of Slovenia
Museum of Contemporary History
Slovenian Museum of Natural History
Slovene Etnographic Museum
or daily trip to Technical Museum of Slovenia in Bistra near Vrhnika (good fun, where some of Tito's limousines are on display).
Galleries in Ljubljana:
Modern Art Gallery
National Gallery
Tivoli Gardens
But most of all... the whole city! Oh, and the castle - and tons of diddy galleries springing up all the time - don't forget the antique market on Sunday mornings...