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.

American Treasure: Valparaiso’s Grand Gardner Hotel

October 2026

A 125-year-old school building in Valparaiso, Indiana, is getting a second life, and much of the credit goes to the masonry that has been standing there since 1899. The Grand Gardner Hotel is an adaptive reuse project centered on the former Gardner Schoo

Cass Stern

American Treasure

Designing Better Masonry Envelopes Starts with the Air Barrier

October 2026

As expectations for building performance continue to rise, air barriers have become a critical part of modern wall design. Today’s building envelopes must support energy efficiency, occupant comfort, durability, moisture management, and increasingly strin

Building Solutions

Kennison Forest Products, Inc. Continues as a Silver Partner in 2027

October 2026

The Mason Contractors Association of America (MCAA) is pleased to announce that Kennison Forest Products, Inc. is continuing as a Silver Partner in the 2027 Masonry Alliance Program.

MAP Partner

WIRE-BOND Renews as a Platinum Partner in 2027

October 2026

The Mason Contractors Association of America (MCAA) is excited to announce that WIRE-BOND will renew as a Platinum Partner in the 2027 Masonry Alliance Program.

MAP Partner

Interested in working with us? Learn about and join the Masonry Alliance Program →