A structure for myoglobin was uploaded to the PDB when it launched in 1971.
A low-resolution structure of the flagellar motor came in 2006.
By 2020, we got the entire flagellar motor, with its hundreds of proteins, at high resolution.
So much progress in only 50 years.
(Not to mention that the first electron microscopes, made in the 1930s, barely outperformed a magnifying glass in terms of resolution. We went from faint, barely legible images of viruses in 1938 to solved structures for huge protein complexes with ~3 Angstrom resolution in the span of like 80 years. Astounding.)