BKSK Architect’s Tammany Hall Restoration Draws on Lenape Symbolism. In one of 2020’s most striking adaptive reuse projects, the Manhattan-based architecture firm inserted a glass dome in the likeness of a tortoise on top of the Union Square building.

Courtesy Francis Dzikowski

All the emissions released in construction, the fossil fuels burned to create raw construction materials and move them to the site, the carbon released in making concrete, trees felled for timber, it’s all embodied in these structures.

Source: 14 Adaptive Reuse Projects from 2020 Show Great Design Doesn’t Mean New Construction – Metropolis