Niue is 260,000,000 times larger than Mill Ends Park.
Area: 260 km2 World Factbook
Population: 1,190 (July 2014) World Factbook
Niue is an island country in the South Pacific Ocean, 2,400 kilometres northeast of New Zealand within the triangle formed by Tonga to the west, Samoa to the north, and the Cook Islands to the east. Its land area is 260 square kilometres and its population, predominantly Polynesian, is around 1,400. Wikipedia
Area: 0 km2 calculated
Mill Ends Park is a tiny urban park located in the median strip of SW Naito Parkway, approaching esplanade along the Willamette River near SW Taylor Street in downtown Portland, Oregon, United States. The park is a small circle 2 ft across, with a total area of 452 sq in. Wikipedia