No person shall leave a fire unattended while in a city park, and no person shall leave a city park before extinguishing any fire built, lighted or maintained by himself in any such park. [Ord. 914 Art. 2, § 1, 2016; Ord. 869 Art. 2, § 2, 2013; Ord. 860 Art. 2, § 2; Ord. 744 Art. 2, § 2; Ord. 286 § 2.]