CTBUH

Spire or antenna; what sits atop One World Trade Center in Lower Manhattan? The answer isn't just semantics, it will determine if the building is indeed taller than Chicago's Willis Tower. A decision by the official arbiter could come next week.
Nov 9, 2013   NPR
It's a scandal fit for an Olympic track and field event or the Tour de France. Performance enhancing features such as spires and other non-occupiable "vanity height" elements are skewing the ranking of the world's tallest buildings.
Sep 11, 2013   Quartz
It seems a bit early in the year to be bestowing "best of" honors, but that hasn't stopped the Council on Tall Buildings and Urban Habitat (CTBUH) from naming their best tall buildings of 2012. These towers are certainly worth paying attention to.
Jun 18, 2012   Business Insider