15. Alexander Hamilton Custom’s House
Guastavino’s work appears in the Alexander Hamilton Custom’s House (the American Museum fo American Indian portion) as a giant domed ceiling in the massive rotunda under which workers once sat at the large marble counter to collect tariffs. The skylight that is supported by the dome weighs 140 tons and there is no metal support structure. The ceiling is made entirely of plaster and tile using the famous Guastavino method.