IMI, National Geographic and the Great Cathedral Mystery

Words: Bronzella Cleveland

The International Masonry Institute (IMI) National Training Director Robert Arnold, along with other IMI staff, were sponsored by National Geographic to help construct a scaled down version of Brunelleschi's Dome in Florence, Italy for a program on the engineering of the world's largest brick dome. "NOVA's Great Cathedral Mystery," produced by National Geographic Television in association with Camera One Productions, premieres on PBS Feb. 12, 2014. See a preview of the program below.

URGENT: Only One Cornerstone Spot Remains in the 2026 Masonry Alliance Program
May 2026

The Mason Contractors Association of America (MCAA) is thrilled to announce that the 2026 Masonry Alliance Program (MAP) has reached a critical stage of exclusivity.

MAP Partner
Read More
The Compliance Shield: Navigating the New Standards of Field Oversight
May 2026

The modern job site is undergoing a quiet but significant transformation. While the physical act of laying a block remains the core of the trade, the environment surrounding that work is becoming increasingly data-driven. We are moving away from the era o

Shayne Sanders
MAP Partner
Read More
When GEORGE Met BOB: Ironsite Is MCAA's First AI-Centered Cornerstone Partner
May 2026

Earlier this year at World of Concrete, I taught the AI Test Drive class and gave attendees an early look at GEORGE 3.0, which we're set to release later this year. As I was wrapping up the session and people were still asking questions, the team from Iro

Dan Kamys
MAP Partner
Read More
Ironsite Joins Masonry Alliance Program as Newest Cornerstone Partner
May 2026

The Mason Contractors Association of America (MCAA) is thrilled to announce that Ironsite will be joining the Masonry Alliance Program (MAP) at the Cornerstone level.

MAP Partner
Read More
Interested in working with us? Learn about and join the Masonry Alliance Program →