Complex sentence: Taggart made additional improvements at the mineral springs that included the construction of pavilions, including the Pluto spring house (circa 1911) to shelter the springs and a new mineral spring bath at the site of the present-day spa facility.
Split into simpler sentences: Taggart made additional improvements at the mineral springs that included the construction of pavilions, including the Pluto spring house (circa 1911), to shelter the springs. A new mineral spring bath was built at the site of the present-day spa facility.