One of South Florida’s oldest, homegrown accounting firms left its Miami Beach stomping grounds of 57 years for a newer, hipper spot in Miami’s Design District.

What began as a one-man show has evolved into the 100-employee Gerson Preston Robinson & Co. Founder Gary Gerson launched the company nearly six decades ago after an auditing stint with the U.S. Navy. At 21, he was named one of the youngest certified public accountants in the U.S.