This list ranks the tallest buildings in the European Union that stand at least 150 metres (492 ft) tall, based on standard height measurement. This means that spires and other architectural details are included in the official height, but not antenna masts, as it is defined by the Council on Tall Buildings and Urban Habitat. Only habitable buildings are ranked, which excludes radio masts and towers, observation towers, cathedrals, steeples, chimneys and other tall architectural structures.