User blog comment:ElectricLizalfos888/Park making tips: Enclosure type making/@comment-200.121.181.143-20190717134926/@comment-38497603-20190717142848

Honestly the "viewing area" guide sounds convoluted as hell. You can make an aviary viewing area however you want, as long as you can make sure the space inside is completely closed. Could put it on the side, in the middle, in the ground, on top of the dome, you could even make it cut through the aviary. As long as you have plenty of airspace inside and a decent-looking dome shape (Doesn't even have to be a dome, could be a big pyramid), you'll be fine. A cheaty way I like to make domes is to neaten up a surface ravine (Remove cave entrances, hazards like lava and 1 block high spaces in the walls, grow grass inside), and then build a short glass box on top that closes off the ravine. And boom, lots of space without having to build much of a megastructure