Oregon's coast is pleasantly inviting -- and its towns uniquely charming -- if you visit during the cooler months of spring or fall. Fewer people. Less traffic. Cheaper lodging.

Most visitors prefer June, July and August, when the coast bustles with couples and families looking to soak up the sun. You'll just need reservations months in advance.

The towns on or near U.S. 101 on the north coast -- Seaside, Cannon Beach, Manzanita, Oceanside, Depoe Bay, Newport and others -- all have their special appeal. And all are connected by their expansive beaches and rugged hillsides, some that stretch into the ocean and produce intriguing tide pools or jagged rock formations.

But if you're thinking about a trip, do it soon. The coastal landscape is steadily changing as a result of growth from new homes, condos and retail.

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Oregon Chautauqua Program Spotlights Abraham Lincoln (Newport News-Times)
The American Association of University Women (AAUW) will host a free Oregon Chautauqua program at 7 p.m. today (Wednesday) at the Congregational Church, 1760 NW 25th St. in Lincoln City.

Which town to visit? That's the beauty of a trip in off-peak season: You can drive the scenic highway and stop wherever you please. I did and found plenty of places to enjoy the views or take a peaceful beach stroll.

No two hamlets are alike.

Astoria, for instance, sits at the mouth of the Columbia River and marks the western end of the Lewis and Clark Trail. Victorian homes dot the landscape, and stately old storefronts make it appear frozen in time. The lush rain forest provides a spectacular backdrop.

Seaside, a few miles south, has a two-mile promenade, arcade games, paddleboats, a carousel and a small aquarium -- a kind of Atlantic City of the Northwest. If your kids are looking for carnival activities, stop here.

Cannon Beach, site of the much-photographed Haystack Rock, a 235-foot-tall marine and bird sanctuary offshore, has a quaint and attractive retail district, with galleries, boutique shops and restaurants in a compact area -- a miniature Carmel that draws a crowd year round.

Newport, at the southern end of my trip, is the coast's equivalent of a big city. The historic Bayfront is kind of kitschy, unless you're fond of cheap tourist souvenirs and wax museums, but Mo's Restaurant -- so popular there's an annex across the pier from the original -- serves a rich, savory clam chowder, the best I've ever tasted. Across Yaquina Bay, the Oregon Coast Aquarium is first rate: interactive tide-pool displays, an underwater tunnel with unobstructed views of sea life, and outdoor exhibits featuring sea otters, harbor seals and sea lions.

But if you're here for tranquility -- a place to fly a kite or collect agates and driftwood -- you can always find it at the beach, no matter where you stay.

Manzanita and Oceanside offered welcome respites. Both are isolated, with easy beach access, small hotels, a few restaurants and some shopping.

Mornings are perfect for beach walks, even if the sun refuses to appear. Fog sometimes hangs over the nearby hills and a mist rises from the foamy waves, but if the tide is out, there are broad sweeps of beach to explore. Many mornings I had the shoreline to myself.

Oceanside, a village of about 300 nine miles west of Tillamook (think cheese factory, where you can watch it move across conveyor belts and sample some), is an ideal getaway. Cellphones don't work, and the main drag is little more than a couple of restaurants, a hotel and the post office, where residents park their cars in the red zone every morning to pick up their mail. There's not a souvenir shop in sight.

From my hotel window, I had a perfect sight line to Three Arch Rocks at the north end of the beach. The rocks are a national wildlife refuge designed to protect a seabird nesting colony, plus peregrine falcons, brown pelicans, bald eagles and sea lions.

If the tide is out, take a walk through the narrow human-made tunnel burrowed into the hillside. At the other end, you'll find the aptly named Tunnel Beach, with several smaller rocks off the coast and tide pools that can be examined readily by kids.

At day's end, head to the Historic Anchor Inn and Grill, or Roseanna's Cafe on the other side of Pacific Highway, where you can dine on oysters, clams or crab and watch the sea fade into darkness.

Locals will tell you to enjoy the coast now, because it's gradually changing. And a land-use measure passed in 2004 might create a construction boom. Condominiums, homes and retail stores already are rising.

You'll see none of that in the spring or fall. Just lots of space and lots of quiet.

If you go

What to do

If you start your trip in Astoria, visit the Flavel House Museum for a look at a classic Victorian home. The house is 11,600 square feet with period furniture. The museum, 441 Eighth St., is open year round. Information: www.cumtux.org, 503-325-2203.

Seaside has a small aquarium that's not too impressive, but its collection of harbor seals is irresistible. All were born in captivity, and some now exhibit self-taught behavior, such as slapping their bellies, to attract attention when visitors buy small bits of fish to toss. Open daily at 9 a.m. Information: 400 N. Promenade, www.seasideaquarium.com, 503-738-6211.