. >> i think polk designed when was working for burnem. this is the pu club, a union club. >> it's hard to imagine an entrance that says more clearly, keep out. >> i was thinking yesterday about other clubs. there are many, many clubs and most of them don't have the luxury of all of this land that this club does. so there are many private clubs with entrances on the streets with beautiful polished or lacquered doorways that are stunning, but never any grass. always closed and it's a very difficult entrance because wants to be welcoming to its members, but keep others out, so it's a challenge. >> this is an interesting photo you took. >> i exposed this one on purpose to try and make the point that the gross form of the building is so powerful that it tell it's you where the entrance is. you don't even have to see the door to know where to head. >> extreme symmetry and great cathedral. this is not the entrance that is commonly used except by the cardinal? >> as far as i know, it's never or very rarely on special occasions >> i think it's spe