Which iconic landmark was once owned by a private citizen?

stonehenge

Explanation:

In the past, Stonehenge was purchased by a wealthy man named Cecil Chubb as a gift to his wife. So, technically this make the iconic landmark was owned by a private citizen.

In 1918, Chubb gave the Stonehenge to public's ownership again and said that people who wanted to see this landmark shouldn't be charged expensively

we need the diagram to answer this correctly.