Indiana Code Title 36. Local Government § 36-10-4-20

Sec. 20. (a) Real and personal property may be granted, devised, leased, bequeathed, or conveyed to a city for park purposes or for the establishment, improvement, maintenance, or ornamentation of a park, playground, boulevard, pleasureway, parkway, wheelway, garden for horticulture and floriculture, museum, zoological garden, collection of natural history, observatory, library, fountain, monument, work of art, art gallery, or other public ground.

(b) The city may take and hold the property in trust or upon conditions that are approved by the board.  The property and the rents, issues, and profits from it are subject to the exclusive control of the board.

(c) The board shall also provide accommodations and take the steps that the money at its disposal will justify for securing and preserving collections of natural history and the establishment of museums in the parks of the city.

(d) The property may be improved, added to, and changed at the board's discretion and shall be protected, preserved, and arranged by the board for the public use and enjoyment under the rules that the board prescribes.

(e) The public may use and enjoy the facilities, although the board may impose an admission charge for entrance into the gardens, museums, and other collections.

(f) The board may also contract for the management and maintenance of gardens, museums, art galleries, or other institutions with a society incorporated under statute, as long as the public has the right to use and enjoy the facilities.  The board may also impose an admission charge for entrance into these facilities, which remain subject to the control of the board.