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

<P0-S0> The fortress of Real Fuerte de la Concepción (English: Royal Fortress of the Conception) is a star fortress built in the Vaubanesque style. <P0-S1>  It is located 0.6 mi west of the village of Aldea del Obispo in the province of Salamanca, western Spain, part of the autonomous community of Castile and León. <P0-S2>  The fortress was constructed there because of its position of great strategic significance due to its proximity to the border between Spain and Portugal which lies 0.4 mi to the west of the fortress. <P0-S3>  The Fortress of the Concepcion is also opposite the Portuguese castle fortress of Almeida which lies 5.5 mi west-north-west of the fortress. <P0-S4>  In 2006, the derelict fortress was sold privately and the site was renovated into a luxury hotel which opened in 2012. <SEP> <P1-S0> Kastellet, (English: The Citadel) located in Copenhagen, Denmark, is one of the best preserved star fortresses in Northern Europe. <P1-S1>  It is constructed in the form of a pentagram with bastions at its corners. <P1-S2>  Kastellet was continuous with the ring of bastioned ramparts which used to encircle Copenhagen but of which only the ramparts of Christianshavn remain today. <SEP> <P2-S0>  [Elphinstone in Pendhari and Maratha War Papers, 245.] <P2-S1>  On the right side of the southern gate is a well preserved stone pond about thirty yards square with steps leading down to it. <P2-S2>  This citadel was connected with the main wall by a cross wall running across the whole breadth of the fort from east to west. <P2-S3>  The outer walls east of the gates have bastions at every turn of the cliffs, and the masonry here is particularly strong and well preserved. <P2-S4>  Next to it on the south is a small pond evenly cut and lined with mortar used for storing water. <P2-S5>  This road winds down the face of the range for some five hundred feet till it hits the shoulder of a spur which it then follows to the base. <P2-S6>  There are some remains of sepoys' houses, and, near the turret, a small stone wheel said to belong to a gun. <P2-S7>  On the south side the walls are carried right up to the scarp of the upper citadel and are some ten feet high, so that to take the lower citadel in rear or flank must have been difficult. <P2-S8>  There is a gateway of a pointed arch with the top fallen in and twenty odd steps leading up to it and ten more cut out of the rock, and winding up past the inside curtain on to the top. <P2-S9>  After passing the southern gateway the assailants would be commanded Maan, Maharashtra from the lower citadel. <P2-S10>  The walls of this upper citadel are still in tolerable preservation. <P2-S11>  The Karkhanis or Superintendent of the fort was a Prabhu. <P2-S12>  It contains two massive bastions of excellent masonry looking north-west and south-west so that guns planted on them could comMan d respectively the north and south gateways. <P2-S13>  The upper citadel is above a vertical scarp some thirty feet high. <P2-S14>  On the south-west the outer wall or enceinte is entered by a rude gateway of a single pointed arch about eight feet high and five feet broad. <SEP> <P3-S0>  It was built from 1885 to 1887 for the growing English congregation in the city. <P3-S1>  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. <P3-S2> St. Alban's Church, locally often referred to simply as the English Church, is an Anglican church in Copenhagen, Denmark.