1. The Pyramids of Giza in Egypt: These ancient structures are made of limestone blocks, which were quarried from the nearby Mokattam formation.
  2. The Colosseum in Rome, Italy: This iconic amphitheater is made of travertine, a type of limestone that is commonly found in the region.
  3. The Great Wall of China: This ancient defensive structure is made of a variety of materials, including brick, tamped earth, and natural stone. The stone blocks used in the construction of the wall were quarried from nearby mountains.
  4. The Taj Mahal in Agra, India: This iconic mausoleum is made of white marble, which was quarried from the nearby town of Makrana.
  5. The Notre Dame Cathedral in Paris, France: This famous cathedral is made of limestone, which was quarried from the nearby town of Champagne.
  6. Jama Masjid, India: This Persian-styled mosque was built in 1656 using red sandstone slabs with white marble. The Jama Masjid has three gates and four towers with two minarets made of Red Indian sandstone slabs.
  7. Amer Fort, India: It is built using red coloured Indian sandstone slabs with assorted marbles in large ramparts and gates. Sandstone’s opulence is obvious in the courtyard and the Diwan-e-Khas area of the palace.