Buffalo serves as a hub for the region's many leisure opportunities and tourism attractions. On the Niagara River, some 20 miles northwest of downtown, is the world's greatest waterfall. One of the state parks near the city is Fort Niagara State Park, which is located at the river's mo… Buffalo serves as a hub for the region's many leisure opportunities and tourism attractions. On the Niagara River, some 20 miles northwest of downtown, is the world's greatest waterfall. One of the state parks near the city is Fort Niagara State Park, which is located at the river's mouth.