The second Today Show clue about locations in The Lost Symbol pointed to the U.S. Botanic Garden, a gem that sits just below the Capitol building. I can imagine Dan Brown's hero, Dr. Robert Langdon, creeping among the tropical vegetation in the middle of the night, looking for a killer, or maybe finding a rare plant that yields the key ingredient in serum for a deadly, obscure poison. The garden doesn't get the traffic of the nearby Air and Space Museum or other mall attractions, but it's worth a visit. I stopped by a few months ago, and spent an hour or so marveling at the conservatory and other exhibits. And congrats to commenter Debra for unscrambling the anagrams orchid house, plant adaption and garden primeval. Now for Clue #3 from Matt Lauer: The site shown in the video houses the remains of this CONFEDERATE: CHOEPSLTGE. Where is he? (The answer on Read Street later today.)