In Portland you'll never be short of something to do for entertainment, the city centre is packed with attractions including several museums, and many parks including a superb Japanese Garden, and an area filled with Cherry trees that is particularly beautiful when the blossom is on show in April. If you're in need of a dose of adrenaline after all this tranquillity, then a trip along the Portland waterfront in a jet boat is a thrilling experience, and you can see the skyline from the Willamette River for around $30 for a two-hour trip.