If you have a few hours in Zurich, the best way to spend them is by exploring the Altstadt (Old Town) on foot, as most major sights are clustered near the main station (Hauptbahnhof). Start by walking down the Bahnhofstrasse, one of the world's most exclusive shopping avenues, then cross the Limmat River to wander the narrow, cobblestone alleys of Niederdorf. For a quick and iconic view, take the Polybahn funicular—a 100-second ride from Central—up to the Polyterrasse at ETH Zurich for a panoramic look over the city and the lake. If time permits, visit the Grossmünster church to see its distinctive twin towers or head to the Lindenhof hill, a historic Roman site that offers a peaceful park atmosphere and a classic view of the Old Town. Before heading back to the airport or station, grab a box of "Luxemburgerli" macarons from Sprüngli or a high-quality bar of Swiss chocolate from Läderach to enjoy on your journey. These activities are all easily accessible within a 2-to-3-hour window from the central hub.