After the war, Plant returned to the South in February, 1865 to reclaim his business interests, primarily the Southern Express. The railroads of the South had been practically ruined and many railroads went bankrupt in the
depression of 1873. In this situation, he found his opportunity. Convinced of the eventual economic revival of the South, he bought at
foreclosure sales in 1879 and 1880 the
Atlantic and Gulf Railroad and the
Charleston and Savannah Railroad. With these as a nucleus he began building along the southern
Atlantic seaboard a transportation system that twenty years later included fourteen railway companies with 2,100 miles of track, several steamship lines, and a number of important hotels. In 1882 he organized, with the assistance of Northern capitalists (among whom were M. K. Jesup, W. T. Walters, and
Henry Morrison Flagler, who himself would be instrumental in the development of Florida's east coast) the
Plant Investment Company, a
holding company for the joint management of the various properties under his control. He reconstructed and extended several small railroads so as to provide continuous service across the state, and by providing better connections with through lines to the North he gave Florida orange growers quicker and cheaper access to Northern markets. In 1887, Plant built the
PICO Hotel in
Sanford for the accommodation of his railroad and steamship passengers to Central Florida. Subsequently, he either built or purchased the Inn at Port Tampa (1888), Hotel Kissimmee (1890), Seminole Hotel (1891), Hotel Punta Gorda (1894), The Ocala House (1895), and the Fort Myers Hotel (1898).
Tampa, then a village of a few hundred inhabitants, was made the terminus of his southern Florida railroad and also the home port for a new line of steamships to
Havana. For the accommodation of winter visitors he built in Tampa, in the style of a Moorish palace, an enormous hotel costing over $3,000,000 and covering 6 acres situated on 150 acres. Opened on February 5, 1891, it was the first hotel in Florida to have an elevator, electric lights, and a telephone in each room. The hotel was called the Tampa Bay Hotel and was famous for its fanciful Moorish and Victorian architecture. In 1898, this hotel gained international fame as the stateside military headquarters for the U.S. invasion force during the Spanish–American War. The hotel now serves as the main building for the
University of Tampa and houses the
Henry B. Plant Museum. Another large, Victorian-style hotel established by Plant was opened in 1897, the
Belleview Biltmore near
Clearwater, Florida. The subsequent growth in wealth and population of Florida and other states tributary to the Plant System made its founder one of the richest and most powerful men in the South. A good physical inheritance, preserved by temperate habits, made it possible for Henry Plant to keep working until almost eighty years of age. ==Later life==