Is the zoo open year around

Yes

Yes it is an indoor facility.

Yes. Not Christmas

Please check shedd aquarium website for holiday calendar

Shedd AQUARIUM. I repeat AQUARIUM. Yes it is open year around.

Shedd AQUARIUM, is not a zoo and it is open year round. And the zoo is also open year round.

The Lincoln park zoo is free and open all year, but you have to pay for the shedd aquarium, but it's well worth it. My grandkids said that was the best part of our weekend getaway to Chicago

It is an aquarium but yes it is open year round but some activities are seasonal and they close on certain days per their website.