It's difficult to pinpoint a single year for Albert Einstein's "peak fame." His fame grew gradually throughout his life, with different periods marked by major breakthroughs and public recognition.

Here are some key periods:

* 1905: This is often considered Einstein's "annus mirabilis" (miracle year) as he published four groundbreaking papers on the photoelectric effect, Brownian motion, special relativity, and mass-energy equivalence. This year marked the beginning of his rise to prominence in the scientific community.

* 1915: Einstein published his theory of general relativity, a revolutionary advancement in our understanding of gravity. This achievement solidified his status as a leading physicist and brought him wider public attention.

* 1919: The Eddington expedition confirmed Einstein's predictions about the bending of light near massive objects, providing strong evidence for general relativity. This event made Einstein a global sensation, bringing him worldwide fame and recognition.

* 1920s and 1930s: Einstein continued to work on theoretical physics and became a public figure, advocating for peace and social justice. He received the Nobel Prize in Physics in 1921 and his fame reached new heights.

Therefore, it's more accurate to say that Einstein's fame peaked in the 1920s and 1930s, with his work and personality capturing the public imagination. His legacy continues to inspire and fascinate people around the world even today.