Close-fitting blocks of this material clad aggregate of pebbles and mortar to form the walls of The Church of the Holy Cross on Akdamar and other medieval Armenian churches. Legendarily, a female sculptor named Sabina made a sculpture for a building made of this material of a crowned woman holding a cross looking at a blindfolded Synagogue. A tower added by Ulrich Ensingen and Johannes Hültz to the plan of Erwin von Steinbach made a building primarily made of this material the tallest in the world from 1647 to 1874. Notre-Dame de (*) Strasbourg was the only Gothic cathedral to be primarily made of this (-5[1])material. White marble and this visually contrasting material (-5[1])were used to construct Mughal buildings (10[1])like Humayun’s tomb. For 10 points, what sedimentary rock (10[2])lends the (10[1])namesake color to the Red Fort (10[1])in Delhi? (10[1])■END■ (10[3]0[1])