Portland has long traded on its weirdness, but the City of Roses earns a spot on any Pacific Northwest itinerary for more concrete reasons: the tallest waterfall in Oregon is a 30-minute drive away, a legendary coastline is an easy day trip, and downtown holds a bookstore that fills an entire city block.

Start with the classics. The Portland Japanese Garden, where tickets run $22.50, sits a short walk from the free International Rose Test Garden, where more than 10,000 rose bushes are trialled for commercial growers — worth timing a visit for peak bloom in early summer. Nearby in the Pearl District, Powell's City of Books claims the title of world's largest independent bookstore, with four floors, a coffee bar and a Rare Book Room on the third floor (free passes from the information desk, access 10am to 5pm). It opens daily at 10am and stays open until 9pm.

The best day trip is the Columbia River Gorge, where a half-day tour strings together four waterfalls — Latourell at 225 feet, Shepherd Dell, the 500-foot Wakeena, and finally Multnomah Falls at 620 feet. The walks between them are short strolls rather than hikes, so it suits most fitness levels. A full day out goes the other direction, to the Oregon coast: Cannon Beach and its enormous Haystack Rock, tide pools full of starfish at low tide, the sea caves at Hug Point, and views from Neahkahnie Mountain and Ecola State Park, where bald eagles sometimes appear.

In town, an e-bike tour is a smart first move because Portland's river divides it into four quadrants and you can cover all of them, crossing the vertically lifting Steel Bridge and the car-free Tilikum Bridge, with Mount Hood on the horizon. Food is its own attraction: the food cart pods are a genuine institution, and a guided donut tour — hitting Voodoo Doughnut plus local spots, with everything from blueberry basil to 'doughssants' — sells out regularly, so book ahead. Mississippi Avenue and the Alberta Arts District are the neighbourhoods to wander for bars, breweries and live music once downtown is ticked off.

Practically speaking, you may not need a car at all. TriMet's MAX light rail, buses and streetcars reach most sights, Google Maps handles the routing well, and Uber fills the gaps after dark. Pack layers even in July and August — rain and cool evenings are normal in summer — and if you only have three days, a sensible split is bikes and gardens on day one, the gorge on day two, and the coast on day three.