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Detroit is the largest city in the U.S. State of Michigan. It is currently the 18th largest city in the United States. The Hyperborean Cyclops Ma Gasket and her two sons have a factory there in which Leo Valdez, Piper McLean, and Jason Grace ran into in The Lost Hero.

Percy Jackson and the Olympians[]

The Sea of Monsters[]

Detroit is first mentioned when the Laistrygonian Giants who attack Percy Jackson at Meriwether College Prep pose as students visiting from the city.

The Heroes of Olympus[]

The Lost Hero[]

Festus crash-lands and Leo, Piper, and Jason fall into a closed car plant. Piper recovers from a hurt ankle while Leo is looking for Festus. Jason then goes looking for Leo, who he thinks is gone missing, leaving Piper alone. Jason is then knocked unconscious by one of the Hyperborean Cyclopes. The Cyclopes eventually capture Piper as well. Leo is able to save the two using his fire powers after being contacted by a sleeping woman in the earth, who is the real reason for his mother's death. Festus' wires are replaced and the trio gets underway just as the Cyclopes reform.

Locations (CHB)
Magical Locations: Aeolia | Athena Parthenos Shrine | Antaeus' Arena | Camp Fish-Blood | Camp Half-Blood | Camp Jupiter | Cave of Trophonius | C.C.'s Spa and Resort | Daedalus' Workshop | Labyrinth | Lotus Hotel and Casino | Mount Othrys | Ogygia | Olympus | Pan's Cave | Tarquin's Tomb | Sea of Monsters | Tartarus | Underworld | Waystation | Zeus' Palace
Cities and Towns: Atlanta | Athens | Anchorage | Bar Harbor | Berkeley | Bologna | Buford | Charleston | Chesapeake Beach | Chicago | Cloudcroft | Colorado Springs | Denver | Detroit | Évora | Gila Claw | Houston | Indianapolis | Jamestown | Keeseville | Los Angeles | Las Vegas | Leeds Point | Malibu | Miami | Montauk | Nashville | New Orleans | Newark | New York City | Oakland | Omaha | Palm Springs | Paris | Pasadena | Philadelphia | Quebec City | Richmond | Rome | San Francisco | San Juan | Santa Barbara | Santa Monica | Seward | Sparta | Split | Seattle | St. Augustine | St. Louis | Tahlequah | Vancouver | Venice | Virginia Beach | Washington, D.C. | Westport | Yonkers
Administrative Divisions: Alaska | Alentejo | Arizona | British Columbia | California | Colorado | Connecticut | Dalmatia | Florida | Georgia | Illinois | Indiana | Kansas | Louisiana | Maine | Maryland | Michigan | Missouri | Nebraska | Nevada | New Jersey | New Mexico | New York | Ohio | Oklahoma | Oregon | Pennsylvania | Puerto Rico | Quebec | South Carolina | Tennessee | Texas | United States Virgin Islands | Utah | Virginia | Washington
Countries: Canada | Croatia | France | Greece | Italy | Portugal | United States of America
Continents: Africa | Europe | North America
Other Locations: Atlantic Ocean | Alternative High School | Apennine Mountains | Aunty Em's Gnome Emporium | Brooklyn | Caldecott Tunnel | Calvert Peninsula | Caribbean Sea | Carlsbad Caverns | Central Park | Charleston Harbor | Crusty's Water Bed Palace | Empire State Building | Gateway Arch | Grand Canyon | Hell's Kitchen | Hephaistos Building Supplies | Hoover Dam | Jackson Apartment | Jackson-Blofis Apartment | Junkyard of the Gods | Long Island | Mediterranean Sea | Mississippi River | Mount Diablo | Mount Etna | Mount Saint Helens | Mount Tamalpais | Mount Vesuvius | Nero's Tower | Oakland Airport | Panama Canal | Pacific Ocean | Pikes Peak | Plaza Hotel | Polyphemus' Island | Poseidon's Summer Villa | Queens | Rocky Mountains | Rainbow Organic Foods & Lifestyles | Roman Empire | San Francisco Bay | St. Thomas | Triple G Ranch | United Nations Headquarters | Waterland | Yancy Academy
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