Closest antipodean land to me is the Keurgulen Islands.
The vast majority of people in the world live exactly opposite part of an ocean. Take a look at this map. The only significant cases where two pieces of land are exactly opposite each other are Argentina and Chile being opposite China and New Zealand being opposite Spain:
The Indian Ocean, well southwest of Australia, in the Roaring Forties. Not the most welcoming place on the planet.
I came relatively close to comeing up at Port-au-Français, Kerguelen Islands, in the South Indian Ocean. Turns out there are two points in Saskatchewan which have an antipode on an island: the area around the village of Consul, which pops up at Port-au-Francais, and Parkside, which has [Heard Island](Heard Island and McDonald Islands) in the South Indian Ocean as its antipode.
Other than that, look like the only antipodes in Canada are the Arctic Archipelago.
About 400 miles west-southwest of the southwestern corner of Australia.
There are some places in Alaska that have antipodes in Antarctica. Can’t really find any inhabited ones though except at or very near the far north coast.
Off the coast of Peru, relatively speaking not too far from Uruguay my home country.
Checking the map I noticed something interesting, Uruguay falls almost completely inside the Yellow Sea on the other side, except for two very small areas, Shanghai in China and Jeju island in Korea, and I’ve been to both.
Indian ocean, well SW of Australia around the same latitude as Tasmania, but probably a couple thousand miles east.
There’s a couple others. Two small islands in the Indian Ocean are opposite southeastern Colorado.
We had a thread on this a few years ago. As far as anyone could tell, Australia was the largest country that was completely antipodal to water. But it was close to some land. The Azores are antipodal to the Bass Strait and Bermuda is opposite the ocean about 30 km off Perth.