Even though this tower was built during Chola period, some of the details might have been modified during the later Nayak Period. The Krishna Leela statues might have been added during the Nayak period.
Statues at the Keralantakan Gopuram, the gateway tower to Brihadishvara Temple, Thanjavur, Tamil Nadu, India
Nandhi is always positioned facing God Shiva traditionally. This statue was facing Darbhar (Royal court) inside the palace complex which housed temples as well.
Nandhi (Bull) statue facing the temple inside the Thanjavur Royal Palace, Thanjavur, Tamil Nadu, India