This is the 4489th most frequent French word.
intérieures
"Intérieures" (feminine plural) means "interior" or "inner" in English.
In this sentence, 'intérieurs' is an adjective describing 'murs', denoting that the walls are located inside the house.
Les murs intérieurs de la maison ont besoin d'être repeints.
The interior walls of the house need repainting.
Here, 'intérieurs' acts as an adjective modifying 'voyages', indicating introspective or inner types of journeys rather than external ones.
Les voyages intérieurs peuvent être aussi enrichissants que les aventures à l'étranger.
Inner journeys can be as enriching as adventures abroad.
In this case, 'intérieurs' describes 'espaces', referring to areas inside a building or structure.