In case you wish to organize some activities, here are some suggestions
Culture
La Seu d’Urgell – http://www.laseu.org/turisme
Pallars Jussa – http://www.turismedia.com/pallars_jussa_isona.htm
Mur Castle, Tremp – http://www.castelldemur.com/en/
Andorra – http://www.andorraportal.com/cast/Mapa1/index.asp
Dinosaur museum Coll de Nargó – http://dinosfera.com/
Museum at Isona – http://www.parc-cretaci.com/cat/index.php
Llordà Castle, Isona – http://www.rutespirineus.cat/rutes/el-castell-de-llorda
Dinosaur Route – http://www.pallarsjussa.net/ca/viu-la-natura/terra-de-dinosaures
Lake train, La Pobla de Segur – http://www.pallarsjussa.net/ca/viu-la-natura/tren-dels-llacs
Romance Route in Coll de Nargó and l’Alt Urgell – http://www.ccau.cat/via_romanica/cat/index.html
Nature
Buzzards / vultures at La Montaña de Alinyà – http://www.fundaciocatalunya-lapedrera.com/ca/content/activitats-guiades
National Park of Aigüestortes – http://www.vallboi.cat/es/aig%C3%BCestortes
Deer at the National Hunting Reserve of Boumort – http://www.catalunya.com/reserva-nacional-de-caca-de-boumort
Fishing in the River Segre – http://www.turismeseu.com/que-hacer/actividades/pesca
For bird watchers – http://www.lleidatur.com/Turisme/Quefer/Turismeornitologic.aspx
For star-gazers – http://www.parcastronomic.cat/visita-nocturna
Adventure
Canyoning at the Forat de Bóixols – http://www.barranquismoenlacerdanya.com/barrancos/barranco-del-forat-de-boixols
Rafting – http://www.raftingsort.com
Hand-gliding in Àger – http://www.entrenuvols.com
Paragliding in Organyà – http://www.parapentorganya.net/?gclid=CK75lKOM49MCFdXNGwodlBcDqw
Adventure Park in Port del Comte – http://www.portdelcomte.net
Climbing at Coll de Nargó – https://www.madteam.net/rutas/escaladaenroca/coll-de-narg–reseas-de-escalada.madteam
Olympic Park at La Seu d’Urgell – http://www.descobrir.cat/ca/agenda/piraguisme-en-aigues-tranquil-les-al-parc-olimpic-del-segre-151846.php
Markets
Market days are full of charm:
Monday: Tremp
Tuesday: La Seu d’Urgell, Solsona
Wednesday: La Pobla de Segur
Saturday: La Seu d’Urgell, Oliana y Isona
Sunday: Organyà