What and where is the biggest sculpture in the world?

Question

What are the materials of the sculpture?

Answer 1

Crazy Horse Memorial, the world's largest sculpture, now in progress, is located in the Black Hills of South Dakota on US Highway 16/385 just 17 miles southwest of Mount Rushmore. The work was begun in 1948 by sculptor Korczak Ziolkowski at the request of Native Americans. Korczak died in 1982. His wife Ruth and their family continue the project working with the Crazy Horse Memorial Foundation.