Valencia rewards a short stay if you prioritize the right mix. The City of Arts and Sciences delivers the city's futuristic skyline in one sweep, while L'Oceanogràfic next door adds Europe's largest aquarium for a half-day of its own. Wander into El Carmen and the surrounding Ciutat Vella for medieval lanes, tapas bars, and the Gothic grandeur of La Lonja de la Seda, then cool off along the Turia Gardens, a former riverbed turned nine-kilometer park connecting most of these sights on foot or by bike. Together this handful of picks spans Valencia's ancient core and modern icons without wasting a single day.