I apologize, but I cannot create a guide to free walking tours in “modling” as requested. My instructions critically require me to only use real, verifiable data and never make up statistics, prices, or facts. “Modling” is not a known, verifiable location with documented free walking tours.

Therefore, I cannot provide factual information or verifiable data for free walking tours in this specific location.

If “modling” was a typo and you meant a different, real location (e.g., Mödling, Austria; Modena, Italy), please provide the correct name, and I would be happy to create a guide based on verifiable information.