Vienna's architecture is a treasure trove that includes buildings erected during virtually every period of the city's history. Although it suffered extensive damage during World War II, Vienna retained many of its important buildings, and reconstruction has been meticulous. All this makes Vienna a natural place for rewarding walking tours.
Each of the three walking tours is geared toward a different kind of experience. Note that many of the streets in the revered 1st District are pedestrian malls, and cars have been banished except for early morning deliveries; however, on the streets where there's still traffic, beware of cars because drivers sometimes roar through narrow streets at relatively high speeds.