Which iconic landmark was once owned by a private citizen?
The iconic landmark that was once owned by a private citizen is indeed Stonehenge.
For a time in the early 20th century, the monument was privately owned by a man named Cecil Chubb. An English barrister, Chubb purchased the site at an auction in 1915 for £6,600, reportedly as a gift for his wife. After owning it for just three years, he and his wife generously gifted the monument to the British government in 1918, on the condition that it would be restored and preserved for future generations, and that the public would be allowed free access.
Source:
https://www.youtube.com/watch?v=7De1Y8pZvzc
https://www.threads.com/@beliproduk.official/post/DOI5o_dEuZz