Located in Alexandria Bay, New York, Boldt Castle, built by hotel magnate George C. Boldt for his wife, is tucked away in the St. Lawrence Seaway and now operates as a tourist destination and romantic getaway.
Designed in the Mediterranean Revival style, Hearst Castle in San Simeon, California, built by publisher William Randolph Hearst, contains Hearst’s collection of valuables, as well as a magnificent indoor swimming pool. In 1972, the castle was added to the National Register of Historic Places.
An early example of poured concrete construction, Fonthill Castle in Doylestown, Pennsylvania, was built by American archeologist and designer Henry Chapman Mercer to showcase his decorative tiles and prints.
The Smithsonian Castle in Washington, D.C., housed the specimens and exhibits of the Smithsonian Institution before the museum expanded. Constructed in the mid-1800s, the grand building was designed by architect James Renwick Jr. (who also built St. Patrick’s Cathedral in New York City).
A Gothic Revival mansion, Lyndhurst Castle in Tarrytown, New York, was owned by railroad tycoon Jay Gould. The exterior of the building was made of the same limestone quarried to create Sing Sing, a present-day correctional facility in Ossining, New York.
New York’s Singer Castle, located on Dark Island in the St. Lawrence Seaway, was constructed by Frederick Gilbert Bourne, complete with secret passageways and a clock tower.
The Cranston Street Armory in Providence—the former home of the Rhode Island National Guard—was labeled as one of 2015’s “Most Endangered Properties” by the Providence Preservation Society.
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With their thick walls and iron-clad windows, most of the world's castles were originally built to keep enemies at bay. Medieval warfare was a thing of the past, though, when castles started to rise in America. These extravagant structures were built not as fortresses but as temples to wealth and power—often by business magnates. Today, some are located far from civilization, while others are in the middle of cities. They range from stately manors to grand civic buildings. Castles in the U.S. may not have as long a history as the great castles of Europe, but their stories are just as fascinating. Here, AD rounds up ten of the most marvelous castles across the country.