What am I riddles

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

I have lot of memories, but I own nothing. What am I?

I am a nut with a whole. What am I?

I’m at the beginning of the end and the start of eternity, at the end of time and space, in the middle of yesterday but nowhere in tomorrow. What am I?

I have a bed but I do not sleep. I have a mouth but I don't eat. You hear me whisper, but I never talk. You can see me run, yet I never walk. What am I?

I can only live where there is light, but I die if the light shines on me. What am I?

I have four legs but no tail. Usually I am heard only at night. What am I?

I hiss. I can be poisonous. I am long. I have a forked tongue. What am I?

I sleep when you are awake, I am awake when you fall asleep. I can fly but no feathers to aid my flight. What am I?

I am alive without breath and cold as death. I am never thirsty but always drinking. What am I?