While there are many examples of individuals who had a significant influence on the design and development of cities, it is rare for a city to be created entirely by a single person. Cities typically develop over time through a complex process of growth and change driven by a variety of factors, including geography, economics, politics, and culture.

However, there are some instances where an individual played a particularly important role in the founding or development of a city. For example, James Oglethorpe founded the city of Savannah, Georgia in the United States in 1733 as a planned city. He designed the city's layout and architecture and envisioned it as a place of religious tolerance and social equality.

Another example is Brasília, the capital city of Brazil. The city was planned and developed in the 1950s by the Brazilian architect Oscar Niemeyer and the urban planner Lúcio Costa. The city was built to be a modernist masterpiece, with its distinctive layout and iconic buildings reflecting the ideals of Brazil's then-president, Juscelino Kubitschek.

While these examples are not strictly cities created by a single person, they do demonstrate the significant influence that an individual can have on the design and development of a city.
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