Quick, what is this pictured building?

Quick, what is this pictured building?

What do you think this building, under construction, is?

Please vote in the poll.

Bonus if you know where it's located.

Correct answer will be given in a few days (Friday).

A Prison
Airport Control Tower
Solar-Electric Generating Station
Concrete Mixing Plant
SpaceX Assembly Building
A Hotel
Something ELSE - please tell
Select gender and age to cast your vote:
Updates
7 mo
This is Barack Obama's Presidential Library, under construction in Chicago.

Congratulations to those who got it.
Quick, what is this pictured building?
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