I was going through some photos from last year when I visited the National Zoo in DC and found a few tortoise photos . I think the first one is a pair of pancake torts, and the second is either a Galapagos or Aldabra.
They had a big indoor enclosure and we were there during feeding time. One of the keepers was there and had a pile of various greens on the ground. This one was really friendly and followed the keeper around as he was sweeping and spraying down the enclosure. After he was done, the keeper hand-fed him a whole carrot .