The great length of the nave is visible - east to the high altar and west to the main entrance - well over 50 metres in length
The crypt has two stairs for access - from the churchyard and from the sanctuary. A heavily decorated entrance in the sanctuary was constructed in the 15th century. The stairs are worn by the many pilgrims visiting the relic of St. Wulfram.
Climb the narrow spiral stair to a room over the south porch. In early times it was lived in by a priest - and has a fireplace!
The magnificent organ case by Tapper forms the east end of the north aisle, creating the St Michael chapel. To the left the dramatic St, Michael window by Harry Harvey of York, 1962, depicts the Archangel Michael and war in heaven.
High up in the 13th century tower: the walls are 5 feet thick The oldest bell in use is the "Ting Tang" hung in 1674 by the widow of the chaplain to Charles II
The spire of St. Wulfram's dominates the town of Grantham. The local oolitic limestone was ideal for building being both durable yet soft enough for delicate carving The church's exterior has hardly changed since 1450 although parts are 300 years older.