The building trades have my respect. The skill and ability to work with metal, electricity, stone, and wood to create useful items and structures is worthy of much admiration.
On a recent road trip, my friend and I visited a fairly new tourist attraction. Based on ancient plans you can see the use of new methods and admire old-fashioned workmanship at the same time.
Size. Scale. Ingenuity. Use of simple concepts like gravity to the advantage of humans. Storage facilities using materials at hand.