The Borra Caves are a very interesting tourist destination in Vishakhapatnam. Having an archeological, historical and religious significance the caves are a must visit. The Caves remain open on all days of the week so you can also visit on a Monday. You can checkout the opening timings of Borra Caves here.
Photo of Borra Caves (by Raj srikanth800)
There are so many places to go when in Vishakhapatnam, to know more you can check out the placed to visit in Vishakhapatnam.