Ok, maybe my statement was too generic... it's more about the environment in cities that looks suspiciously similar to nature but isn't - trees that are tested

Ok, maybe my statement was too generic... it's more about the environment in cities that looks suspiciously similar to nature but isn't - trees that are tested regularly for stability, paths that are kept free of roots or stones you might trip over, guardrails and warning signs everywhere there might be the slightest possibility of danger etc.