When streaming became the default way to draw a town, Ludlow came out upside down.

Each town here can exist in two forms: a stack of files at different levels of detail, and a streamed bundle. For Ludlow they were built from different sources. The stack is stored upright. The bundle came from the original capture, which is stored with Y pointing down. Both were read with the same rotation setting, and for Ludlow that setting is nothing at all, because the stack never needed one.

So a town can now declare a rotation for its streamed bundle on its own. There is a test that rotates Ludlow’s real bounds and checks that the rooftops stand more than 20 m above the floor. Without the fix they stood at 3.4 m. I checked the other eleven bundles the same way, and they were already upright.