The district of Aoyama is known for its smart boutiques housed in eye-catching buildings. The Prada building, whose exterior of blue-tinged mirrors is girdled by a steel framework, is the work of the same team that designed Beijing's Olympic Park. Check out the uneven contours of the Spiral Building and the Cartier boutique before heading for the more subdued atmosphere and remarkable collection of the Nezu Museum (sculpture, calligraphy, textiles).