St. Petersburg, Florida, was founded in 1888 by John C. Williams of Detroit, who purchased the land, and Peter Demens, a Russian immigrant who helped bring the Orange Belt Railway to the area. The city was incorporated in 1892 and named after St. Petersburg, Russia, Demens' hometown. In its early years, St. Petersburg was primarily a fishing village and a popular winter destination for wealthy Northerners seeking a warm climate. The city's growth accelerated in the early 20th century with the development of the tourism industry, particularly after the introduction of the railroad, which made travel easier. The opening of the Gandy Bridge in 1924 connected St. Petersburg to Tampa, further boosting the city's accessibility and economic expansion.

Throughout the 20th century, St. Petersburg continued to grow as a major tourist destination, known for its beautiful beaches, vibrant arts scene, and sunny weather. The city became a hub for retirees in the mid-1900s, earning the nickname "God’s Waiting Room" due to its large senior population. However, in recent decades, St. Petersburg has undergone significant revitalization, attracting a younger and more diverse population. The downtown area has been transformed with new cultural institutions, such as the Salvador Dalí Museum, and an expanding arts and food scene. Today, St. Petersburg is known for its dynamic waterfront, innovative businesses, and lively cultural attractions, making it one of Florida’s most desirable places to live and visit.