Landmarks - Mount Rushmore

Mount Rushmore, featuring the faces of four US presidents, is a significant monument in the US. The monument requires annual cleaning due to its exposure to the elements, a task that is both challenging and dangerous. The monument was carved between 1927 and 1941, primarily using dynamite, and has undergone various preservation efforts to maintain its condition. Today, it stands as a symbol of democracy and attracts millions of visitors each year.

What is the significance of Mount Rushmore as described in the text?

How long did it take to carve the faces on Mount Rushmore and who was the sculptor?