Portland has one of the most attractive, inviting downtown centers in the United States. It's clean, compact, and filled with parks, plazas, and fountains. Architecture fans find plenty to admire in its mix of old and new. Whereas many urban U.S. business districts clear out at night and on weekends, Portland’s downtown is decidedly mixed-use, with plenty of residential and commercial buildings, and an appealing mix of hotels, shops, museums, restaurants, and bars. You can easily walk from one end of downtown to the other, and the city’s superb public transportation system—which includes MAX light rail, buses, and the streetcar—makes it easy to get here from other parts of the city. A day pass is recommended.