Karlskirche

Here's the thing - what church interior is worth 6 euro?  I have to admit not Karlskirche.  The high altar is beautifully baroque, but we aren't talking St. Peter's in Rome.  The exterior though, is exquisite.  Two columns rise on either side of the entrance, intricately carved, spiraling upward.  They offset the center dome in a way that I haven't seen before.  It is easy to imagine the exterior without the columns, in which case it becomes just another church.  To my mind it is the slender, graceful columns that make this exterior so unique.