The phrase "a round structure" is correct and usable in written English.
It can be used to describe an object or building that has a circular shape or form.
Example: "The architect designed a round structure that would serve as a community gathering space."
Alternatives: "a circular form" or "a spherical design".
It is a round structure with a round cella.
"I was a little worried when they drew a round structure like a silo," Mr. Gilpin said.
Both the museum, a round structure built on the Washington Mall, and its sunken sculpture garden across the street were designed by Gordon Bunshaft.
I showed you this Etruscan attempt at making a round structure, with a dome, that was done, in this case, in stone, and although it was a valiant attempt, not all that successful.
In the exhibition's major piece, you look up into a round structure suspended overhead and discover the concave, concrete basin of a municipal-park fountain inverted so that it functions as a grungy domed ceiling.
As you pass the last locked gate and pulling onto the property, a round structure emerges out of the redwoods: the newly finished art gallery, a building whose roof is made of wood lattice and a translucent material that makes the light glow inside.
The only conspicuous clue to the area's intriguing past is a tall, round structure that looks more like a lighthouse than a former smokestack.
Somehow you always end up getting lost inside, even though it's a perfectly round structure.
Due to the different optical density of the surrounding nucleolar material, the INB can also be visualized by differential interference contrast microscopy (DIC), appearing as a distinct, round structure within the nucleolus.
We see a view of this round structure, called a tholos t-h-o-l-o-s; a round tholos t-h-o-l-o-s
This is particularly relevant to missing wedge "fanning" (which occurs at very specific angles), but may also be useful in differentiating a straight-edged crystalline structure from a round amorphous structure of the same material.
