Drag to orbit, pinch to zoom. Tap a room to step inside. Hide the roof to see the plan. On a phone, tap AR to put it on a desk or on site.
Android Chrome: WebXR AR built into this page. iPhone/iPad: opens Apple Quick Look with the USDZ file. Quest: AR passthrough.
Walkabout
Move freely, no hotspots. Desktop: W A S D / arrows to walk, drag to look. Phone: drag left side to walk, right side to look, or turn on Gyro look and just move the phone. Quest: Enter VR, left stick walks, right stick turns.