An atrium asks for a landmark. A children's floor asks for height. A mechanics hall asks for weight. We group the catalogue by the hall it has to work in, not by the textbook chapter it comes from.
The first thing a visitor sees. Scale, movement and light above head height.

Low, soft, open-ended. Built for ages 3–10 and for the hundredth visit.

Pattern, proof and probability, made physical.

What the eye believes versus what is actually there.

Standing waves, resonance and the shape of a sound.

Fields you can feel, current you can follow.

Levers, gears, pendulums and the weight of a real machine.

Why a bridge holds and a wall does not.

Cores, plates, volcanoes and the ground under the hall.

Deep water, currents and the machines that reach the bottom.

Food webs, habitats and the living systems around us.

Orbits, spectra and a night sky you can walk into.

The body at work, from a heartbeat to a villus.

Where biology meets computation: neurons, signals, decisions.

From a fibre to a screen: how a signal travels.

Robots, production lines, grids and the systems that run a city.

Rail, road, air and the physics of getting there.

Energy, water, waste and the choices that add up.

Fire, quake, water and the drill that saves a life.

Tools, benches and open problems for people who build.

Each hall page lists the exhibit types we build for it and the categories it draws from. Where a hall needs a mix — most do — we list the mix we would propose, with model codes and dimensions.
Attach a theme outline, a floor plan, or nothing at all — a photo of the space is enough to start. Quotations are issued against real drawings, not per-square-metre guesses.