Zurich is considered Switzerland's most important financial, industrial and commercial center. Important artworks are displayed in the Kunsthaus and the Rietberg Museum. Nestling beside Lake Zurich and along River Limmat, Zurich offers splendid views of the Swiss Alps. The Opera House and the Tonhalle concert hall attract stars of world stature on the classical music scene those who consider shopping an art can hone their skills along Bahnhofstrasse and Niederdorf. The Old Town of Zurich is home to historic buildings that host numerous boutiques and antique shops. Zurich's 500 clubs and bars, including several in swimming pools, pulse with life 'til the early hours. This city on Lake Zurich has excellent public transit and a free bike rental system.