Drill straight through the center of the Earth from Santiago, Chile and you'd surface on the exact opposite side of the planet — its antipode.
Santiago's antipode sits at 33.45°N, 109.33°E, in the northern hemisphere, east of Greenwich. That places it in or near the Indian Ocean.
It lies roughly 20,015 km from Santiago — about as far apart as two points on Earth can possibly be. And the relationship is symmetric: the antipode of that spot is, of course, right back here in Santiago.
Santiago's antipode is a rare one: it actually lands on solid ground, about 9 km from Tiechang, a town in China. Most cities don't get that lucky — antipodal land pairs are uncommon since water covers about 71% of the globe.
Antigea's live map shows the satellite view, the closest Street View, and the local time on the other side of the world.