If you like really big guns and diamonds...

Reenactors fire a mid-19th-century cannon at the Chickamauga and Chattanooga National Military Park in the first of 2 Antiques Roadshows...also inspect an heirloom necklace whose centerpiece is a five carat diamond, valued at $250,000...and then go to San Antonio to visit the Witte Museum's collection of horn furniture, a Bavarian craft popularized in 19th-century America by Texas maker Wenzel Friederich, whose patrons included Queen Victoria and Kaiser Wilhelm I. At the Henry B. Gonzalez Convention Center, appraisers corral treasures from all over the map, including a massive desk and bookcase, made in the mid-19th-century German-Texan tradition, valued at $7,000 to $10,000. Antiques Roadshow...7 & 8pm