This plant reminds me of a cross between a hosta and lily of the valley...?

Question:I saw this plant today and it has leaves like a hosta. They are green and outlined in white. They also have white flowers hanging down like lily of the valley. They do not lay like hostas, they are higher up. Does anyone have a name for this plant/flower? Thanks.

Answers:
Yucca?

And in case that's not right -
How large overall is this plant? How tall is the flower stalk?