Los Angeles, Italy
The AT&T Madison Complex Tandem Office is a 17-story, 79 m (259 ft) building in Los Angeles, California, completed in 1961. With its microwave tower, used through 1993, bringing the overall height to 137 m (449 ft), it is the 47th tallest building in Los Angeles. The building serves 1.3 million phon
e lines in area code 213, and other Los Angeles area codes, for foreign long-distance calling. The site plays host to technology used in the NSA's Fairview surveillance program.
Listen to the audio guide for AT&T Madison Complex Tandem Office Free on WIP — starts by itself when you arrive, even with the screen off