berlin sought the finest modern architects-- among them, helmut jahn and renzo piano-- to design the sony center and the daimlerchrysler building. in the old financial center of the mitte, my berlin guide, ede, invited me to get bullish at the broker's bier borse. here, the principals of supply and demand determine the prices. some customers decide for one beer, then the price goes up. if they don't drink a particular beer, then the price for that beer is going down, so it's like the stock market. maxa: wait a minute. prices are going up and down all the time or every month? it's changing every 3 minutes. every 3 minutes, the whole chart is updated. on the monitor, you can see the actual price of your favorite beer and then decide if you want to drink it or not. cheerprost. maxa, voice-over: historic, elegant, and conveniently located near the brandenburg gate, the hotel adlon is the finest in town. built originally in 1907, the hotel was europe's luxury destination, hosting guests like charlie chaplin and greta garbo. destroyed by the war, the adlon re-opened with a flourish in 1997