Answer:

spiralstaircase

Answer	Crossword Clue
SPIRALSTAIRCASE	Way up, perhaps
SPIRALSTAIRCASE	Foyer feature
SPIRALSTAIRCASE	Lighthouse feature

SPIRALSTAIRCASE	Medieval castle feature
SPIRALSTAIRCASE	Victorian home feature
SPIRALSTAIRCASE	Steps that wind
SPIRALSTAIRCASE	1945 film mystery starring Dorothy McGuire and Ethel Barrymore (with "The")
SPIRALSTAIRCASE	It turns into a different story
SPIRALSTAIRCASE	Winding steps
SPIRALSTAIRCASE	Gothic mansion feature
SPIRALSTAIRCASE	Elegant house feature

SPIRALSTAIRCASE	Part of a duplex apartment, perhaps
SPIRALSTAIRCASE	Space-efficient floor connector
SPIRALSTAIRCASE	One way to get up and around?
SPIRALSTAIRCASE	It winds up
SPIRALSTAIRCASE	It gets you up and around
SPIRALSTAIRCASE	Round-trip flight?
SPIRALSTAIRCASE	Steps around?
SPIRALSTAIRCASE	Another way to get up

SPIRALSTAIRCASE	Space-saving steps?
SPIRALSTAIRCASE	Indirect flight