More on building heights counting spires. Architects and developers have been including spire heights in their buildilngs for a very long time.
Look at the Empire State Building. When the developers of that building planned it they had envisioned having dirigeables, (blimps/air ships), moor, (dock), at the building's top. They actually expected passengers of blimps to willingly climb down a ladder from the air ship to the building's top at 1,250 feet above the street. No kidding. Of course, that proposal never came to frution. Infact, as construction was wrapping up on the building in 1931, the stock market crashed and companies went out of business. Atleast half of the building stood empty for many years, earning it the nickname, "The Empty State Building". The Empire State Building is 1,250 feet tall from the ground to the mooring mast. The building has 102 floors. The mooring mast actually has an observation deck at the 102nd floor, but it's off limits these days to the public. It's quite small and can't handle the huge crowds. The height from the ground to the tip of the antenna is 1,454 feet tall. That height is not the official height for the building however since the antenna is used for utility purposes, for communication. It could even be removed in the future if it's deterimined to be of no use, although that's not likely. The antenna was added years after the building was built, sometime in the early 60s I believe, about 30 years after the building was finished.
Perhaps the most famous building with a spire is the Chyrsler Building in New York. The building is 1,046 feet tall from the ground to the tip of the spire and it has 77 floors. The height to the roof is 925 feet tall. The spire atop the Chrysler Building is decorative. It serves no purpose other than for aesthetics, for the design of the building. So it is included in its height. The Chrysler Building was the first building in the world to be more than 1,000 feet tall, and only the 2nd structure in human history to exceed 1,000 feet, the first being the Eiffel Tower.
Interesting little sound byte here. This is Marshall Germetta doing an interview with the BBC a while back. Mashall is the senior editor at Emporis.com, (the website I'm also an editor at). I actually met Marshall 2 years ago when he came down to Austin for a visit.

Marshall's great.
https://community.emporis.com/files/mp3/bbc-manchester-marshallgerometta-2007-02-13.mp3