Old St Paul's Cathedral in length including the portico, and across the transepts, and Winchester Cathedral, the longest remaining medieval church, is long and across the transepts. The cathedral had one of Europe's tallest church spires, the height of which is traditionally given as , surpassing all but Lincoln Cathedral. The King's Surveyor, Christopher Wren (1632–1723), judged that an overestimate and gave . William Benham noted that the cathedral probably "resembled in general outline that of Salisbury, but it was a hundred feet longer, and the spire was sixty or eighty feet higher. The tower was open internally as far as the base of
The Dark Spire even equipment choices. The Spire is explored in a first-person perspective, and many classical RPG elements are included, such as random encounters and equipment. The player is tasked to find and defeat the Archmage Tyrhung at the top of the Dark Spire and to retrieve a necklace from him. "The Dark Spire" is a throwback to old first-person dungeon crawler RPGs, such as "The Bard's Tale" or "Wizardry". As a tribute, the game can be set in a mode which renders graphics and sound/music which could have been produced in a game dating to the late 1980s or early 1990s.