Question: What well preserved star fortress is St. Alban's Church in Copenhagen next to?

full_context: Document 1: Middelgrundsfortet: Middelgrundsfortet or Fort Middelgrund is a sea fort located on an artificial island in the Øresund between Copenhagen and Malmö. The fortress is constructed at a point where the seabed is 7 meters below the water surface, and at the northern meeting point of the straits Kongedybet and Hollænderdybet.
Document 2: St Paul's Cathedral: St Paul's Cathedral, London, is an Anglican cathedral, the seat of the Bishop of London and the mother church of the Diocese of London. It sits on Ludgate Hill at the highest point of the City of London and is a Grade 1 listed building. Its dedication to Paul the Apostle dates back to the original church on this site, founded in AD 604. The present cathedral, dating from the late 17th century, was designed in the English Baroque style by Sir Christopher Wren. Its construction, completed in Wren's lifetime, was part of a major rebuilding programme in the City after the Great Fire of London.
Document 3: St Chad's Cathedral, Birmingham: The Metropolitan Cathedral Church and Basilica of Saint Chad is the mother church of the Archdiocese of Birmingham and province of the Catholic Church in Great Britain and is dedicated to Saint Chad of Mercia. Built by Augustus Welby Pugin and substantially complete by 1841, St Chad's is one of the first four Catholic churches that were constructed after the English Reformation and raised to cathedral status in 1852. It is one of only four minor basilicas in England (the others being Downside Abbey, the National Shrine of Our Lady at Walsingham and Corpus Christi Priory, this last now disused). St Chad's is a Grade II* listed building. The cathedral is located in a public greenspace near St Chad's Queensway, in central Birmingham. s of 2014 the Archbishop was Bernard Longley and the Dean Canon Gerry Breen.
Document 4: Wolgast Castle: Wolgast Castle was a Castle in the city of Wolgast in the northeast of today's Mecklenburg-Vorpommern. It was located on a small barrier island in the Peenestrom, the strait which separates Usedom island from the mainland. The island is still called "Castle Island". The castle was one of the most important Renaissance buildings in Northern Germany. It existed from 1496, when it replaced an earlier castle on the island, until it was demolished in the 1820s. After it was demolished, the materials were used to constrcut other building, so no ruins exist. Only a few items from the castle have been preserved in various exhibitions. A reminder of the castle is the coat of arms of the city of Wolgast, which shows a castle tower between two griffins.
Document 5: St. Alban's Church, Copenhagen: St. Alban's Church, locally often referred to simply as the English Church, is an Anglican church in Copenhagen, Denmark. It was built from 1885 to 1887 for the growing English congregation in the city. Designed by Arthur Blomfield as a traditional English parish church in the Gothic Revival style, it is in a peaceful park setting at the end of Amaliegade in the northern part of the city centre, next to the citadel Kastellet and the Gefion Fountain and Langelinie.
Document 6: Christ Church, St Leonards-on-Sea: Christ Church is an Anglican church in the town and seaside resort of St Leonards-on-Sea, part of the Borough of Hastings in East Sussex, England. Opened as the town's third Anglican church in 1860 to serve a rapidly developing residential area and to accommodate poor worshippers who could not afford pew rents at the fashionable St Leonard's and St Mary Magdalene's Churches, the original building was superseded by a much larger church built next to it between 1873 and 1875. Prolific ecclesiastical architect Sir Arthur Blomfield's simple Gothic Revival design forms a landmark on one of St Leonards-on-Sea's main roads, continues to serve a large area of the town (including the former parish of the now closed St Mary Magdalene's Church) and maintains a strong Anglo-Catholic tradition. It has been described as Blomfield's "finest achievement in Sussex" and "one of the main centres of Anglo-Catholic worship in Southern England". The interior fittings are the best of any church in the borough, and the design has been called one of Blomfield's most successful. St John the Evangelist's Church, founded as a daughter church nearby in 1865, also continues to thrive as a separate parish church. English Heritage has listed Christ Church at Grade II* for its architectural and historical importance.
Document 7: Flakfortet: Flakfortet, meaning sand-shoal fortress, is a sea fort located on the artificially built island of "Saltholmrev", in the Øresund between Copenhagen and Saltholm. The island and fort are simply known as "Flakfortet"; the name of the island; "Saltholmrev", meaning the reef near Saltholm, is seldom used.
Document 8: Trinitatis Church: The Trinitatis Church is located in central Copenhagen, Denmark. It is part of the 17th century Trinitatis Complex, which includes the Rundetårn astronomical observatory tower and the Copenhagen University Library, in addition to the church. Built in the time of Christian IV, the church initially served the students of Copenhagen University. It is situated at the corner of Landemærket and Købmagergade. The interior was seriously damaged in the fire of 1728 but was rebuilt in 1731.
Document 9: St Alban's Church, Upton Park: St Alban's Church, Upton Park is a Church of England church in the Upton Park area of East Ham in east London, England, dedicated to Saint Alban. It was founded by St Stephen's Church as a mission church on Boleyn Road in the Upton Park area around 1889, replaced by a small brick church on Wakefield Street in 1897. It was given a parish of its own in 1903, in which year the nave and aisle of a new permanent church on the opposite side of the same street were completed. Vestries, a Lady Chapel and chancel were added in 1934. Damaged by the London Blitz in 1940, it was repaired in 1949 and now forms part of the East Ham Team Parish (also known as the Parish of the Holy Trinity) alongside St Mary Magdalene's Church, St Bartholomew's Church and St Edmund's Church.
Document 10: Kronborg: Kronborg is a castle and stronghold in the town of Helsingør, Denmark. Immortalized as Elsinore in William Shakespeare's play "Hamlet", Kronborg is one of the most important Renaissance castles in Northern Europe and has been added to UNESCO's World Heritage Sites list (2000).
Document 11: Königsberg fortifications: The fortifications of the former East Prussian capital Königsberg (now Kaliningrad) consist of numerous defensive walls, forts, bastions and other structures. They make up the First and the Second Defensive Belt, built in 1626—1634 and 1843—1859, respectively. The 15 metre-thick First Belt was erected due to Königsberg's vulnerability during the Polish–Swedish wars. The Second Belt was largely constructed on the place of the first one, which was in a bad condition. The new belt included twelve bastions, three ravelins, seven spoil banks and two fortresses, surrounded by water moat. Ten brick gates served as entrances and passages through defensive lines and were equipped with moveable bridges.
Document 12: St. Alban's Church, Odense: St. Alban's Church (Danish: "Sankt Albani Kirke" ) is the Roman Catholic parish church of Odense, Denmark. It should not be confused with the medieval church of St. Alban's Priory where King Canute IV was murdered in 1086, and which was later replaced with St. Canute's Cathedral. The medieval St. Alban's Priory was located at Albani Torv ("St. Alban's Square") roughly halfway between St. Canute's Cathedral and St. Alban's Church. A modern stone plaque located at the site of the former church's altar is the only visible remain of this structure.
Document 13: Kärnan: Kärnan (] ; Danish: "Kernen" , both literally "The Core") is a medieval tower in Helsingborg, Scania, in southern Sweden. It is the only part remaining of a larger Danish fortress which, along with the fortress Kronborg on the opposite of Øresund, controlled the entranceway between Kattegat and Øresund and further south the Baltic Sea.
Document 14: Kastellet, Copenhagen: Kastellet, (English: The Citadel) located in Copenhagen, Denmark, is one of the best preserved star fortresses in Northern Europe. It is constructed in the form of a pentagram with bastions at its corners. Kastellet was continuous with the ring of bastioned ramparts which used to encircle Copenhagen but of which only the ramparts of Christianshavn remain today.
Document 15: Enclosure castle: An enclosure castle is a defended residence or stronghold, built mainly of stone, in which the principal or sole defence comprises the walls and towers, within the walls one can find the buildings associated with a mediaeval military settlement: a warden's house, barracks, kitchens, stables, a chapel, and a keep. Examples include Kenilworth Castle, Clitheroe Castle and Ludlow Castle. Many in England are under the protection of English Heritage, which has counted 126 examples. There are several in Ireland also, for example King John's Castle, Carlingford.
ground_truth: Kastellet