Question: What fort other than Fort James, was built in Accra, Ghana?

Context paragraphs:
Fort McAllister: Fort McAllister was a Confederate earthen-work fort used to defend Savannah, Georgia during the American Civil War.  It was the southernmost of the forts defending Savannah and was involved in the most battles.  It was located on the Ogeechee River in Bryan County.  It is listed on the National Register of Historic Places (#70000197).  Fort McAllister was one of three forts protecting Savannah, the others being Fort Pulaski and Fort James Jackson standing in Confederate defiance of the Union naval blockade.  The southeast coast of the United States was the place where both combatants tested the latest in naval artillery and coastal defenses.  Fort McAllister was the key to unlocking the defenses around Savannah, one of the most important Confederate ports on the Atlantic Ocean.

Osu Castle: Osu Castle, also known as Fort Christiansborg or simply the Castle, is a castle located in Osu, Accra, Ghana on the coast of the Atlantic Ocean's Gulf of Guinea.  The first substantial fort was built by Denmark-Norway in the 1660s, though the castle has changed hands between Denmark-Norway, Portugal, the Akwamu, Britain, and finally post-Independence Ghana, and was rebuilt numerous times.  For most of the castle's history, it has been the seat of government in Ghana with some interruptions, the latest when the John Kufuor administration moved the seat of government to Golden Jubilee House after 6 January 2009, which was quickly reversed by the incoming John Atta Mills administration.  It also serves as the place where the late president of Ghana John Atta Mills is buried; in a bird sanctuary, overlooking the Atlantic Ocean.

Oglethorpe Barracks: Oglethorpe Barracks usually refers to a 19th-century United States Army post in the historic district of Savannah, Georgia.  Some sources use the title to refer to Fort James Jackson (also known as Fort Oglethorpe) or Fort Wayne (Georgia), both near Savannah.  A hotel constructed in the 1880s now sits on the site of the old barracks.

Legon: Legon , a suburb of the Ghanaian city Accra, is situated about 12 km north-east of the city center in the Accra Metropolis District, a district in the Greater Accra Region of Ghana.  Legon is home to the main campus of the University of Ghana.  Ghanaians loosely refer to the University of Ghana simply as "Legon".  Legon is also home to a few of Ghana's well known educational institution like Presbyterian Boys' Secondary School (PRESEC-Legon), Achimota School, Ghana Institute of Management and Public Administration and the institute of professional education.  Legon is adjacent to one of the most prestigious residential suburbs of Accra - East Legon and only about 20 minutes drive from the Kotoka International Airport.

Fort Amsterdam: Fort Amsterdam (subsequently named Fort James, Fort Willem Hendrick, Fort James (again), Fort William Henry, Fort Anne and Fort George) was a fort on the southern tip of Manhattan that was the administrative headquarters for the Dutch and then English/British rule of New York from 1625 or 1626 until being torn down in 1790 after the American Revolution.

Fort James Jackson: Fort James Jackson (usually called Old Fort Jackson or shortened to Fort Jackson) is a restored 19th-century fort located on the Savannah River, two miles east of the city of Savannah in the U.S. state of Georgia.  It is a National Historic Landmark and the oldest standing brick fort in Georgia.

Fort Sekondi: Fort Sekondi, also Fort George, was an English fort on the Gold Coast (now Ghana), built in 1682 at Sekondi (earlier Zakonde and Secondee), next to the Dutch Fort Orange, which had been built in 1642.  This first building was small, according to William Claridge: "[...] at Sekondi [...] Captain Henry Nurse, Agent for the English Company, also built a fort there a few years later.  Both these buildings were of about the same size and only a gun-shot apart", and, "The Dutch Fort Orange was a very small place, being merely a square white house in a yard, mounting eight or ten guns on a terrace on the roof.  The first English fort had been a very similar building [...]".  This fort was destroyed on 1 June 1698, during the Dutch-Komenda war, and reduced to blackened outer walls.  Although denied by the Dutch, reports and letters sent at the time indicated that the Dutch instigated the attack and that some plundered goods were taken to Castle Orange next-door.  Attempts were made to rebuild it in 1700, though these had to be abandoned because of hostility from the indigenous population.

Ussher Fort: Ussher Fort is a fort in Accra, Ghana.  It was built by the Dutch in 1649 as Fort Crèvecœur, and is a day's march from Elmina and to the east of Accra on a rocky point between two lagoons.  It was one of three forts that Europeans built in the region during the middle of the 17th century.  Fort Crèvecœur was part of the Dutch Gold Coast.  The Anglo-Dutch Gold Coast Treaty (1867), which defined areas of influence on the Gold Coast, transferred it to the British in 1868.

Fort James, Antigua and Barbuda: Fort James is a fort at the entrance to the harbour of St. John's, Antigua and Barbuda.  The fort was built to guard St. John's harbour and is one of the many forts built by the British in the 18th century.  Fear of a French invasion prompted the construction.  It is located on a headland overlooking the town northwesterly.  A powder magazine, several cannons and the foundation of the fort's wall remain.  The main attraction today is the excellent view of the surrounding harbor.

Fort James (Ghana): Fort James is a fort in Accra, Ghana.  It was built by the British as a trading post in 1673, where it joined the Dutch Fort Crêvecœur (1649), and the Danish Fort Christiansborg (1652).

Supporting paragraphs: Fort James (Ghana) Ussher Fort
Answer: Ussher Fort