A large frog sits at rest in Rittenhouse Square, apparently in concentration.

Facing City Hall tower with its sculpture of William Penn, Clothespin has the jolting and humorous effect of a familiar object seen out of context.

Artist Claes Oldenburg and his wife, Coosje van Burggen, collaborated on the Split Button, which has become a familiar part of the University of Pennsylvania campus environment.

Acquired by aPA for the International Sculpture Garden, the carved stone spouts and lintel are characteristic of ritual bathing pools inside Hindu and Buddhist temples.

The title translates roughly to “My Lord of the Fancy Vest,” but local people often refer to the work as “The Mummer.”

“Sculpture,” said Henry Moore, “should always at first sight have some obscurities, and further meanings.”

Arlene Love’s giant gilded nose and mouth with the rest of the face appearing to have broken away at the Monell Chemical Senses Center.

A giant, angular composition of tubular red steel intended to convey a feeling of unity and spiritual participation.

Giant-sized versions of checker pieces, chess pieces, dominoes, bingo chips, and board game pieces are scattered all over the plaza