The dagger

Once viewed as a whole and the angle for viewing is eastward, the Bell Tower looks like a staggering, gigantic dagger -- standing by its handle planted on the grounds while the sword tip pointed to the heavens. If one ever noticed the four end corners of the roof in the second floor which are curving upward, this section of the structure resembles the quillons [see knife anatomy 8] of the charax dagger. The charax is double-edged and the middle part of the two edges is hollowed. I recall the nightmare I have had where I found myself levitating inside the hollowed middle of the huge vertical tapering structure.

ob·e·lisk

  (ŏb′ə-lĭsk)

n.

1. A tall, four-sided shaft of stone, usually tapered and monolithic, that rises to a pointed pyramidal top.

2. The dagger sign (†), used especially as a reference mark. Also called dagger, obelus.

 obelisk

1. A monument of Ancient Egyptian origins, consisting of a tall tapering shaft of stone with a pyramidal top.

2. A tall, four-sided, stone pillar, especially one erected as a monument in ancient Egypt.

source: thefreedictionary