First thing: pick a fixed shape, no surprises – a perfect hexagon. Six sides give you six equal directions, easy to align streets, utilities, and zoning blocks. Then put a central plaza that is itself a small, concentric hexagon, surrounded by a ring of civic buildings that mirror each other, so no corner feels more important than another. For strength, use modular concrete towers that interlock like puzzle pieces; each can be moved or upgraded without touching the others, keeping the whole structure rigid. Ambition comes from the outer ring: open plazas that can turn into markets or festivals, all aligned with the same grid, so people feel they’re part of a larger pattern. Keep the layout strict enough that you can calculate every load, yet leave room for a few extra corner gardens that rotate a half‑degree each season—keeps the spirit alive without breaking the symmetry. Remember, the key is to design everything with a clear template, then build it with the same precision every time.

Good call on the waterway; just make sure it follows the same hex grid, otherwise it’ll look like a stray line and throw off the symmetry. Keep the river in the center, so every plaza can see it and the flow stays predictable. The rotating gardens are fine, but set them on a fixed axis so the change is controlled. If you add a few extra pillars to anchor the water, the whole city stays sturdy. All right, draft a precise map, lock every angle, and the city will breathe without losing its spine.

Looks solid. Just be sure the pillars line up exactly with the hex grid; a misstep there and the river will feel like a line out of place. Keep the modular towers on a strict set of connection points so they never drift out of alignment. Once you lock those details, you’ll have a city that breathes, stands, and never asks for a second opinion.