TYTHON
Secluded temple with natural accents (sunlight through rock openings overhead, roots, puddles under foot, a natural spring or sunny occulus over the main chamber, etc.
HOTH
Beneath the ice and snow, completely, but with thin ice walls here 'n there for scenic views of the frozen landscape from a cliff-like vantage point. Maybe have frozen creatures or pieces of wreckage available as décor later on.
NAL HUTTA
Bounty Hunter-themed residence; add more & more BH-related décor (animal heads, different weapon displays, etc); wall mounted bounty monitor showing random target with 'wanted' or reward $, etc. View of desolate, toxic landscape.