Complex sentence: The chapel's artistic shape and quality are recognised as in keeping with the masterpieces of Neo-Gothic architecture, and the quality of the Łódź mausoleum is said to be such that there are only a handful of buildings in Europe of equal artistic quality.
Split into simpler sentences: The chapel's shape and quality are recognised as in keeping with the masterpieces of Neo-Gothic architecture. The quality of the Łódź mausoleum is said to be such that there are only a handful of buildings in Europe of equal artistic quality.