The Great Wall of China was constructed over several centuries and claimed the lives of thousands of builders.

It took millennia to build, but today the Great Wall of China stands out as one of the world's most famous landmarks.

Norma Merrick Sklarek was one of the first Black female architects in America who helped build iconic structures across the country.

The first half of the 20th century saw massive surges in polio cases, resulting in extended hospital stays for many, including Eleanor Abbot, a retired schoolteacher who invented Candyland to entertain the children she met in the polio ward.