Master craftsmen explore how Florences monumental dome was built nearly 600 years ago. The Duomo in Florence is a towering masterpiece of Renaissance .\rbr\rbrA great collection of documentaries from around the world. The dome that crowns .\rbr\rbrMaster craftsmen explore how Florences monumental dome was built nearly 600 years ago. The Duomo in Florence is a towering masterpiece of Renaissance .\rbr\rbrNOVA | Great Cathedral Mystery - PBS NOVA | Great Cathedral Mystery - PBS NOVA | Great Cathedral Mystery - PBS NOVA | Great Cathedral Mystery - PBS .