As Alexander said above, it's big and there's plenty of space to spread out. To control the number of people they were admitting only with reservations last time we were there. Best to call or go online in advance since things change at short notice.
Yes wear your mask and yes very spacious, but 1/2 size of the San Diego zoo. Seemed to have a lot of construction improvements in process. And it is hot so bring hats and water and sunscreen .
It's a wonderful large place, with lots to see , we walked 18000 steps or about 6 miles that day. Yes, you wear a mask to help control the spread. So go and enjoy.
There's plenty of space to roam around, masks are currently required.
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