If the Earth is roughly a sphere, is one point on its surface more at the center of things than others? One spot in Wisconsin makes note of its particular location:

Venture west of Wausau, and you’ll find yourself meandering down a country road that leads to a point of global significance—a point where latitude and longitude find harmony at 45 degrees North and 90 degrees West.
Visualize yourself standing at this exact midpoint, not just in a geographical sense between the North Pole and the Equator, but also between the prime meridian and its direct opposite across the globe…
If you pulled out a map, you’d find yourself at the intersection of some of the world’s most important lines of navigation.
Of the four such points globally, Poniatowski’s slice of longitude and latitude is the only one that’s readily accessible.
The others?
They’re either swimming with the fishes in oceanic depths or hiding in landscapes far less hospitable…
The original marker was a humble signpost in a field, but today, thanks to generous community efforts, there stands a clear path, welcoming benches, and an official marker that stakes its claim in the ground.
Hmmm. As Wikipedia notes, “A prime meridian is an arbitrarily-chosen meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°.” And the one prime meridian that won out affects this claim in Wisconsin.
While this claim is based on imposing coordinates on the surface of the planet, I wonder how people around the world would answer this question: “What do you consider to be the center of the world?” Would it be major cities, like New York City or Tokyo? Religious sites? Their homes or land? A natural spot?
Or it might be interesting to investigate which places claim to be at the center of things. A place could be at the geographic or social center of a country. Where are the center points of cities or regions? Is it more important to be at the geographic or social center (see this example from the United States)?