Castles, palaces & forts in United States
Detourmap maps 189 castles, palaces & forts worth the detour in United States — castles, fortresses, palaces and châteaux. The best known is ʻIolani Palace. The 150 most notable are listed here; the rest are on the map. Each has a photo and a Wikipedia article.
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ʻIolani Palace
Castles & palaces · 19th century · Notable
Former royal residence and capitol building in Hawaii
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La Fortaleza
Castles & palaces · 16th century · Notable
Official residence and office of the Governor of Puerto Rico
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Fort Ticonderoga
Castles & palaces · 18th century · Notable
18th-century star fort in northern New York in the United States
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Castillo San Felipe del Morro
Castles & palaces · 16th century · Hidden gem
Colossal fortress in San Juan, Puerto Rico
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Fort Caroline
Castles & palaces · 20th century · Hidden gem
Fort in Florida managed by the National Park Service
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Fort Monroe
Castles & palaces · 19th century · Hidden gem
Former military installation in Hampton, Virginia, United States
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North Carolina State Capitol
Castles & palaces · 19th century · Hidden gem
State capitol building of the U.S. state of North Carolina
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Fort Christina
Castles & palaces · 17th century · Hidden gem
Capital of New Sweden between 1638–1655
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Fort Wingate
Castles & palaces · 19th century · Hidden gem
Fort near Gallup in McKinley County, New Mexico
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Fort Matanzas National Monument
Castles & palaces · 20th century · Hidden gem
Fort in Florida managed by the National Park Service
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Fort Pulaski National Monument
Castles & palaces · 19th century · Hidden gem
National monument in the United States
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Fort Independence
Castles & palaces · 17th century · Hidden gem
Fort on Castle Island in South Boston, Massachusetts
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Fort Phil Kearny
Castles & palaces · 19th century · Hidden gem
Former outpost of the US Army in Wyoming
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Castillo de San Marcos
Castles & palaces · 17th century · Hidden gem
Historic fort in St. Augustine, Florida, USA
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Washington Place
Castles & palaces · 19th century · Hidden gem
Greek Revival palace in the Hawaii Capital Historic District in Honolulu
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Fort Carillon
Castles & palaces · 18th century · Hidden gem
Colonial French fort in present-day Ticonderoga, New York, United States
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Fort Polk
Castles & palaces · Hidden gem
United States Army installation in Vernon Parish, Louisiana, United States, formerly named Fort Johnson
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Fort Rice
Castles & palaces · Hidden gem
19th-century frontier military fort in what is now North Dakota
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Fort Mose
Castles & palaces · 20th century · Hidden gem
Site of a former Spanish fort in St Augustine, Florida
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Fort Zachary Taylor Historic State Park
Castles & palaces · 19th century · Hidden gem
Florida State Park and National Historic Landmark centered on a Civil War-era fort in Key West, Florida
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Fort Mackinac
Castles & palaces · 19th century · Hidden gem
Historic fort on Mackinac Island, Michigan, U.S.A.
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Hulihee Palace
Castles & palaces · 19th century · Hidden gem
Building in Kailua, Hawaii, United States
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Fort Stevens
Castles & palaces · 19th century · Hidden gem
Historic military installation in Clatsop County, Oregon, United States
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Fort Jesup
Castles & palaces · 19th century · Hidden gem
Park in Sabine Parish, Louisiana, United States of America
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Fort Bridger
Castles & palaces · 20th century · Hidden gem
Former fort, open-air museum, and state park in Fort Bridger, Wyoming, United States
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Fort Loudoun
Castles & palaces · 18th century · Hidden gem
18th-century fort in Pennsylvania, United States of America
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Bishop's Palace
Castles & palaces · 19th century · Hidden gem
Historic place in Galveston, Galveston County, Texas
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The Presbytere
Castles & palaces · Hidden gem
Historic building in the French Quarter of New Orleans, Louisiana, United States
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Fort Keogh
Castles & palaces · 19th century · Hidden gem
United States Army outpost in eastern Montana
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Fort Saint Louis
Castles & palaces · 17th century · Hidden gem
Fort in Saint-Louis, Texas, founded by French explorers
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Cove Fort
Castles & palaces · Hidden gem
Fort and historical site in Millard County, Utah, United States
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Fort Hays
Castles & palaces · 19th century · Hidden gem
Was a United States Army fort near Hays, Kansas
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Fort Mifflin
Castles & palaces · 18th century · Hidden gem
On the Delaware River below Philadelphia, Pennsylvania
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Fort Montgomery
Castles & palaces · Hidden gem
American Revolutionary War fort near West Point on the Hudson River
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Fort Washington
Castles & palaces · 18th century · Hidden gem
Historic army fortress in present-day Cincinnati, Ohio, United States
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Fort de Buade
Castles & palaces · 17th century · Hidden gem
Commercial and military post erected in 1683 north of Mackinac Strait, between Lakes Michigan and Huron (Canada-United States)
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Fort de Cavagnial
Castles & palaces · 18th century · Hidden gem
French fort and trading post in modern-day Kansas
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Fort Gaines
Castles & palaces · 19th century · Hidden gem
Historic fort on Dauphin Island, Alabama, United States
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Fort Nassau
Castles & palaces · 17th century · Hidden gem
Dutch settlement beside the "North River", today: Albany (NY)
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Fort Ontario
Castles & palaces · 19th century · Hidden gem
State historic site of New York, United States
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Fort Ouiatenon
Castles & palaces · 18th century · Hidden gem
First fortified European fort in Indiana
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Fort de Chartres
Castles & palaces · Hidden gem
Place in Illinois on the National Register of historic Places
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Fort Grant
Castles & palaces · 19th century · Hidden gem
State prison and a former United States Army fortification
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Fort Hunter Liggett
Castles & palaces · 20th century · Hidden gem
US Army Reserve base in Monterey County
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Fort King George
Castles & palaces · 18th century · Hidden gem
Heritage site in Darien, Georgia, USA
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Fort Tilden
Castles & palaces · 20th century · Hidden gem
Park and historic military installation in New York City
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Naval Base Point Loma
Castles & palaces · Hidden gem
US Navy installation in San Diego, California, United States
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Presidio of Santa Barbara
Castles & palaces · 18th century · Hidden gem
18th-century Spanish fort in Santa Barbara, California, USA
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Fort Buford
Castles & palaces · Hidden gem
Former American Army post in Williams County, North Dakota
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Fort Washington Park
Castles & palaces · 19th century · Hidden gem
Historic fort and military reservation; and surrounding parkland in Fort Washington, Maryland, United States
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Fort Willard
Castles & palaces · 19th century · Hidden gem
Historical fort and park in Fairfax County, Virginia, United States
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Fort Beauharnois
Castles & palaces · 18th century · Hidden gem
French fort on Lake Pepin in present-day Minnesota, United States
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Fort Belle Fontaine
Castles & palaces · 19th century · Hidden gem
Lewis and Clark National historic Trail site in St. Louis County, Missouri, United States
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Fort Corcoran
Castles & palaces · 19th century · Hidden gem
Historical fort in Arlington, Virginia, United States
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Fort Concho
Castles & palaces · Hidden gem
Important US Army installation during the late American Indian Wars
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Fort Cumberland
Castles & palaces · Hidden gem
18th-century frontier fort at the current site of Cumberland, Maryland
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Fort Donelson
Castles & palaces · 19th century · Hidden gem
Confederate fort near Dover, Tennessee during the American Civil War
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Fort Macomb
Castles & palaces · 19th century · Hidden gem
Fort at outskirts of New Orleans, Louisiana
