Figure 1. Çayönü excavation site.
Photo courtesy of Dr. Mehmet Özdoğan.

Figure 2. Braidwoods and colleagues at Çayönü.
Photo courtesy of Dr. Mehmet Özdoğan.

Figure 3. Göbekli Tepe excavation site.
Photo courtesy of DAI (Deutsches Archäologisches Institut).

Figure 4. Archaeologist Klaus Schmidt at Göbekli Tepe.
Photo courtesy of Dr. Klaus Schmidt and DAI (Deutsches Archäologisches Institut).

Figure 5. Djoser Pyramid. Photo courtesy of the Library of Congress Prints and Photographs Division.

Figure 6. Arial view of Giza pyramids. Photo courtesy of the Library of Congress Prints and Photographs Division.

Figure 7. Bust of Cato the Elder. Image courtesy of Wikimedia Commons.

Figure 8. Vitruvius presenting his book to the emperor Augustus.
Image courtesy of Thomas Gordon Smith/Wikimedia Commons.

Figure 9. Bust of Marcus Agrippa.
Photo courtesy of Marie-Lan Nguyen/Wikimedia Commons.

Figure 10. Herod the Great. Image courtesy of Wikimedia Commons.

Figure 11. Reconstruction of Sebastos Harbor at Caesarea.
Illustration courtesy of the artist, Christopher Brandon.

Figure 12. Roman Colosseum.
Photo courtesy of Jim Walker/Wikimedia Commons.

Figure 13. Bust of Apollodorus.
Photo courtesy of Gun Powder Ma/Wikimedia Commons.

Figure 14. Bust of Hadrian.
Photo courtesy of Marie-Lan Nguyen/Wikimedia Commons.

Figure 15. Roman Pantheon.
Photo courtesy of Martin Olsson/Wikimedia Commons.

Figure 16. Interior of Pantheon.
Photo courtesy of Emilio Labrador/Wikimedia Commons.

Figure 17. Interior of the Pantheon's dome.
Photo courtesy of Matthias Kabel/Wikimedia Commons.

Figure 18. Floor plan of the Pantheon.
From Die Kirchliche Baukunst des Abendlandes, 1887. Public domain.

Figure 19. Portrait of John Smeaton. Photo courtesy of the Library of Congress Prints and Photographs Division.

Figure 20. Portrait of William Aspdin.
Image courtesy of the Dartford Town Archive.

Figure 21. Portrait of Marc Isambard Brunel. Image from Joseph Wickham Roe, English and American Toolbuilders (New Haven, CT: Yale University Press, 1916). Public domain.

Figure 22. Thames Tunnel. Image courtesy of the Library of Congress Prints and Photographs Division.

Figure 23. Thomas Edison and Ernest Ransome.
Photo courtesy of William Cummings, Cummings Properties.

Figure 24. Ingalls Building. Image courtesy of the Library of Congress Prints and Photographs Division.

Figure 25. Hoover Dam. Image courtesy of the Library of Congress Prints and Photographs Division.

Figure 26. Thomas Edison. Credit Library of Congress, reproduction number LC-USZ62-78947.

Figure 27. Edison sitting between two phonographs. Photo courtesy of the Library of Congress Prints and Photographs Division.

Figure 28. Frank Lloyd Wright. Photo courtesy of the Library of Congress Prints and Photographs Division.

Figure 29. Wright's Hollyhock House. Photo courtesy of the Library of Congress Prints and Photographs Division.

Figures 30 and 31. Wright's Unity Temple, exterior and interior.
Photos courtesy of the Library of Congress Prints and Photographs Division.

Figures 32 and 33. Wright's Imperial Hotel in Tokyo, exterior and Peacock Lobby. Photos courtesy of Wikimedia Commons.

Figures 34 and 35. Johnson Wax Headquarters Building and Research Tower and Great Work Room of the Johnson Wax Building.
Photos courtesy of the Library of Congress Prints and Photographs Division.

Figure 36. Wright's Fallingwater House. Photo courtesy of the Library of Congress Prints and Photographs Division.

Figure 37. Wright's Solomon R. Guggenheim Museum in New York. Photo courtesy of Mr. Richard Anderson.

Figure 38. Sydney Opera House.
Photo courtesy of Matthew Field/Wikimedia Commons.

Figure 39. Crowd gathers in downtown San Francisco on the morning of April 18, 1906, to watch the approach of the fire.
Photo courtesy of the Library of Congress Prints and Photographs Division.

Figure 40. Man walking across rubble caused by 1906 earthquake and fire. Photo by Arnold Genthe, courtesy of the Library of Congress Prints and Photographs Division.

Figure 41. Disintegrating reinforced concrete floor slab.
Photo courtesy of Smith Home Inspection, East Northport, New York, and through the kind assistance of the International Association of Certified Home Inspectors (InterNACHI).

Figure 42. Disintegrating concrete wall. Photo taken by the author.

Figures 43 and 44. Hockley Viaduct. Images courtesy of Christopher Newberry and the Friends of the Hockley Viaduct.