This is part of Sculpture Walk Jax, a temporary juried sculpture exhibition that features ten sculpture artists (I only have nine pictured, the fountain is a permanent part of the park, not part of this exhibition). These large scale sculptures were installed in the fall of 2017 and will remain in place until the fall of 2019. More information on the program, the sculptures and artists can be found here.
Plenum Orb
Oracle's Gate
my personal favorite
Balance Point
Tower II
Natural Wonders
Socket
Methodic
Slices of Heaven
Light Box
taken in Oct. 2017
Light Box
same sculpture taken in Jan. 2018
Mary Dillon Fountain
Originally designed by C. Adrain Pillars, restored in 2006 by Springfield Improvement Association and Archives