Complex sentence: The park's original landscaping was designed and created by Frederick Law Olmsted, the architect of New York City's Central Park, for the 1893 World's Columbian Exposition.
Split into simpler sentences: The park's original landscaping was designed and created by Frederick Law Olmsted, the architect of New York City's Central Park. Olmstead created a new design for the 1893 World's Columbian Exposition.