Kemah is basically a town carved straight into rock. The gorge rises steep on both sides, the Karasu flows quietly below, and an old castle's ruins still hold the hilltop. History buff — wander the stone streets. Not really — just take the view in, either counts as a plan. By night the town shrinks and the quiet thickens. Short on time? Roll the dice by the canyon: odd sends you up to the castle, even sends you down to the water.