 The original engine propelling the carousel was a belt @-@ driven mechanism , but after the initial restoration it was exchanged for a fluid drive provided by the Kissell Brothers Amusement Rides company of Cincinnati , Ohio , who suggested the platform for the carousel be improved . To provide crowd control , a pavilion was built over the carousel and a ticket booth was installed . Neither was based on any extant buildings , but each was a composite of several other structures . The animals are removed one at a time from the carousel for routine maintenance and refurbishment , which is carried out in the museum 's own shops . 
