Of 20 votes cast so far, Sagrada Família (Barcelona) — Gaudí began it in 1883; still being finished after 140+ years, on track for 2026; its tallest tower will be 172.5m — deliberately 1m short of Barcelona's Montjuïc hill "so as not to surpass God's creation" leads with 25%.
Chartres Cathedral (France) — rebuilt in a swift 26 years (1194–1220); keeps roughly 176 original medieval stained-glass windows, the best-preserved set in the world, hidden piece by piece to survive both World Wars is second on 20%, close enough that a handful of votes could still turn it around.
Votes have come in from 2 countries, most of them from China.
The poll is still live and picked up a vote today.