Built in 1925 and converted to a cooperative in 1959, 1136 Fifth Avenue was designed by George F. Pelham Jr., the architect responsible for the celebrated Hudson River Gardens and Castle Village developments a few blocks north of the George Washington Bridge. The 15-story building with coveted views of Central Park has 43 apartments. The Carnegie Hill stretch of Fifth Avenue is especially attractive as it was fully developed before World War II and has a consistent architectural character, interrupted only by the Solomon R. Guggenheim Museum???s famous curved building designed by Frank Lloyd Wright a few blocks to the south. Though located along Fifth Avenue's "Museum Mile," the area is one of the quietest on the avenue; the restaurants, shopping and galleries of Madison Avenue are just blocks away. The side streets between Fifth and Madison Avenues are especially lovely examples of classic Upper East Side elegance. A large children???s playground is nearby one block to the north in the park. Amenities at this pet- and pied-a-terre-friendly building include a full-time doorman, laundry facilities and basement storage.