Complex sentence: The city was also home of the Western Baseball League's Grays Harbor Gulls from 1995 to 1997 and played their home games at Olympic Stadium, which is listed on the National Register of Historic Places.
Split into simpler sentences: The city was also home of the Western Baseball League's Grays Harbor Gulls from 1995 to 1997. They played their home games at Olympic Stadium listed on the National Register of Historic Places.