Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Humayun's Tomb, Delhi' has mentioned 'Red' in the following places:
Occurrence Sentence Text Source
It was also the first structure to use red sandstone at such a scale.
[31] The combination of red sandstone and white marble was previously seen in Delhi Sultanate period tombs and mosques, most distinctively in the highly decorative Alai Darwaza gatehouse in the Qutub complex, Mehrauli, built in 1311, under the Khalji dynasty.
The tomb built of rubble masonry and red sandstone, uses white marble as a cladding material and also for the flooring, lattice screens (jaalis), door frames, eaves (chhajja) and for the main dome.
As a contrast to the pure white exterior dome, rest of the building is made up of red sandstone, with white and black marble and yellow sandstone detailing, to relieve the monotony.
The building was first to use its unique combination of red sandstone and white marble, and includes several elements of Indian architectural, like the small canopies, or chhatris surrounding the central dome, popular in Rajasthani architecture and which were originally covered with blue tiles.
On the western side of the tomb lies a three-bay wide mosque, in red sandstone.
The structure is of dressed stone clad in red sandstone with white and black inlaid marble borders.