Great Exhibition

The Great Exhibition of the Works of Industry of All Nations (a.k.a. Great Exhibition or Crystal Palace Exhibition) was an international exhibition in Hyde Park, London held on 1851-05-01/1851-10-15.

Stats

2008/2011 (~): I heard mention of the Great Exhibition during a lecture while attending Stanford University. I believe it may have been for my Science, Technology, and Society elective (see https://sts.stanford.edu/ ), although, as of 2023, I forget the exact context and why the Exhibition was referenced.
2017 (~): I heard mention of the 1851 Great Exhibition while listening to Neal Stephenson and Nicole Galland's novel The Rise and Fall of D.O.D.O. in which the public display of the first widely-viewed daguerreotype of the Moon plays an important role in the plot.

↑ Micah Messenheimer; Natanson, Barbara Orbach. (2021-07-22). ““A step out of and beyond nature”: Picturing the Moon”. Library of Congress Blogs. Accessed 2023-04-15. Archived from the original on 2021-07-22. “Successful photographs of the moon using the daguerreotype process would not be made until over a dozen years later, when the celebrated Boston portrait photographer John Adams Whipple sought the assistance of Harvard astronomer William Cranch Bond and his son, George Phillips Bond. Using the college observatory’s Great Refractor telescope, they captured the sphere in its waxing gibbous phase on March 14, 1851. ... Whipple’s daguerreotypes won a medal for excellence at the 1851 Great Exhibition at the Crystal Palace in London, which lauded their role in starting “a new era in astronomical representation.” The views were extremely popular and drew crowds as they toured across Europe, despite scientific quibbles that the photographs were not as accurate as drawn and engraved renderings observed with the human eye.”.