One of the most impressive pieces of architecture I believe, are giant columns. These are are about 60' tall and 10' round. I photographed these because the building was just a colossal piece of art, that really got my attention to all the details. The Parthenon in Nashville, TN is a full scale replica of the original in Athens. It was built in 1897, as part of the Tennessee Centennial Exposition. If you are ever in the area, be sure to visit the Parthenon museum.