Skip to content
🏠 Palladio enables the execution of Esri CityEngine CGA rules inside of SideFX Houdini.
Branch: master
Clone or download
Type Name Latest commit message Commit time
Failed to load latest commit information.
doc Prepare release v1.5.0-beta.2 Mar 18, 2019
.gitignore ci: introduce pipenv to more conveniently get conan Jan 17, 2019
LICENSE Added license file Jan 27, 2018



Palladio is a plugin for SideFX Houdini. It provides operator nodes which enable the execution of Esri CityEngine 'rules' within Houdini networks. This provides a convenient combination of the generic procedural modelling capabilities of Houdini with the architecture-specific procedural modeling language 'CGA' of CityEngine.

Palladio is not an Esri nor vrbn product and there is currently no official/commercial support from Esri nor vrbn. However, if you are interested in commercial services related to Palladio, please contact


External documentation:


Palladio is maintained as an open-source project by Matthias Buehler ( and Simon Haegler (Esri R&D Zurich). Matthias is focusing on UX/UI topics and use-cases in Urban Planning, while Simon is focusing on the implementation and procedural modelling technology.

Our goal is to bring as many Houdini and CityEngine users and developers on board as possible. Anyone is invited to submit issues and/or to fork and contribute to this project.

Join us on slack!

Our thanks also go to the fine folks at Esri R&D Zurich and VRBN which provided valuable comments and feedback.


Palladio has been invented by Matthias Buehler and Simon Haegler in early 2015. It started out as a research project at Esri R&D Zurich to get to a tighter integration of CityEngine and Houdini than just via file-based import/export of assets. Early results were promising, so we slowly cooked the project to v1.0 in our spare time. In December 2017, we decided to open-source Palladio with an Apache 2.0 license.


Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

You can’t perform that action at this time.