A collection of strongboxes hold treasures, unknown to outsiders.

The unknown sacred treasure that changes the geography of any place.

But let there be no scales to weigh your unknown treasure; And seek not the depths of your knowledge with staff or sounding line.

Let him find the unknown treasure, if he has the initiative.

But the Downing Stadium cache was never completely examined because of the area's debris and bad lighting, putting it somewhere near the realm of unknown treasure.

Alsatian wines remain the unknown treasure of France's vineyards.

And on the far worlds, what unknown treasures might not be waiting . . . If only Dulcia could have been here.

Do you really expect that I'll just open the doors to the rooms with their unknown treasures for you?

So Polly took the hint and went away, rejoicing in the thought of the unknown treasures she was to carry home.

He listened to the nothingness of silence; the greatest, but most unknown, treasure of man.