This is the home of the national collections of living and fossil plants, animals, and minerals, with many magnificent specimens on display. The zoological displays are quite wonderful -- not up to the level of the Smithsonian in Washington, DC, but still definitely worthwhile. Exciting exhibits designed to encourage people of all ages to learn about natural history include "Human Biology -- An Exhibition of Ourselves," "Our Place in Evolution," "Origin of the Species," "Creepy Crawlies," and "Discovering Mammals." The Mineral Gallery displays marvelous examples of crystals and gemstones. Visit the Meteorite Pavilion, which exhibits fragments of rocks that have crashed into the earth, some from the farthest reaches of the galaxy. What attracts the most attention is the dinosaur exhibit, displaying 14 complete skeletons. The center of the show depicts a trio of full-size robotic Deinonychus enjoying a freshly killed Tenontosaurus. "Earth Galleries" is an exhibition outlining humankind's relationship with planet Earth. Here, in the exhibition "Earth Today and Tomorrow," visitors are invited to explore the planet's dramatic history from the big bang to its inevitable death. The latest development here is the new Darwin Centre, with final completion scheduled for 2007, although there is much on view now. Dedicated to the great naturalist Charles Darwin, the center reveals the museum's scientific research and outreach facilities and activities. You're given an insider look at the storage facilities -- including 22 million preserved specimens -- and the laboratories of the museum. Fourteen behind-the-scenes free tours (ages 10 and up only) are given daily; you should book immediately upon entering the museum if you're interested.