With 388 national park sites to choose from, picking a park should be easy. At the tip of your travel tongue may be Yellowstone or the Grand Canyon, but dig a little deeper and you will find many surprises. America's National Parks are more than just hiking trails into mountain valleys, campsites overlooking sweeping vistas and unparalleled chances to watch moose and elk run wild. Many are famous historical sites, battlefields and small parks with big-time scenery.

Whether you want a wild adventure or an historical quest, follow these helpful tips:

Follow Your Sense of Adventure

Choosing the park that's right for you. In America's National Parks, you can scale an active volcano in Hawaii; raft over class V rapids through magnificent gorges and valleys at Gauley River National Recreation Area; cap off a day on Alcatraz Island back at your hotel with a spa treatment before hitting the streets of San Francisco; embrace history by tracing footprints at Antietam National Battlefield or watching oil droplets bubble to the surface of Pearl Harbor above the USS Arizona Memorial; shine a solitary beacon of light into the dark depths of Kentucky's Mammoth Cave; snorkel off the coast of Padre Island National Seashore; experience a mystifying sense of neighborly warmth around the Martin Luther King Jr. National Historic Site; or conquer the ice age by hiking along Glacier National.

Redefining "Crowds"

Picking the park for you may depend on how well you like crowds, according to travel agents. Some National Parks reel in millions of visitors a year, though a crowded park is not like a crowded bus. There is plenty of room for everyone, and even the most crowded parks, like the Great Smokey Mountains in Tennessee, have plenty of areas where your footprints will be the first ones of the day.

Most Visited National Parks - 2007

1. Great Smoky Mountains National Park

2. Grand Canyon National Park

3. Yosemite National Park

4. Olympic National Park

5. Rocky Mountain Naional Park

6. Yellowstone National Park

7. Cuyahoga Valley National Park

8. Zion National Park

9. Acadia National Park

10. Grand Teton National Park

Source: Based on data from the National Park Service

Visitors may flock to the parks on the list above, but the good news is that others are relatively free of crowds, leaving more room for solitary adventure, quiet family outings and undisturbed wildlife. Here are a few possibilities for your next escape.

Nez Perce National Historical Park (Idaho, Oregon, Washington and Montana) These 38 sites in the valleys, prairies, mountains and plateaus of the inland northwest honor the history of the Nez Perce people as they mixed with explorers, fur traders, missionaries, settlers, soldiers, gold miners and farmers. Several sites feature interpretive trails, and visitors will often see golden eagles, marmots, black bears and mule deer.

Isle Royale (Michigan, Minnesota) You'll escape crowds of people in these wild woods of the North, but encountering crowds of wolves, otters and moose is another thing. Roadless Isle Royale is a 45-mile long wilderness archipelago in the heart of Lake Superior, gloriously threaded with 165 miles of scenic hiking trails connecting historic lighthouses and shipwrecks, ancient copper mining sites and plenty of spots to observe wildlife.

Catoctin Mountain Park (Maryland) You will not see the President on Catoctin Mountain, for his nearby, well-known retreat, Camp David, is closed to the public. But you will see plenty of white-tailed deer, wild turkeys and woodpeckers among the beauty of this rolling forest. Camping and hiking dominate the minds of visitors here, with relaxation in resplendent nature the ultimate goal for presidents and common folk alike.

When to Go

Travel agents suggest you check with each individual park to confirm that it will be open to the public. The summer and winter months are generally the most popular times. To avoid crowds, gain better access to the viewing areas and enjoy more time in leisure pursuits, travel during the spring and fall.

Peak periods also follow school schedules, so avoid winter break, spring break and the summer holidays. Visiting during the week will garner you much more open spaces than weekends. That said, traveling during peak times, like most of us are forced to do, should never deter you from visiting, for the parks are well worth the trip 365 days a year.

Where to Stay

Camping is the most popular option, whether in a tent, RV or in the backcountry. Most parks have cottages, cabins, lake houses or houseboats to rent. And, near some parks there are hotels. As with any trip, book your accommodations as far in advance as possible.

Fun for the Whole Family? Children, Yes. Pets, No.

National Parks are perfect for kids. Many parks run Junior Ranger Programs, nature walks and wildlife talks specifically geared towards children.

The wilderness is not pet-friendly. Some hiking trails prohibit all pets, while others demand that they remained leashed. Bears, wolves and mountain lions prey on small animals and will be attracted to your trail or tent if you bring your pet(s) along.

General Tips

- Stop in at the Visitors Centers for the latest information about safety hazards, closures, weather and wildlife notices.

- Always stay on the trails when walking and hiking to protect both you from the wilderness and the wilderness from you.

- Clean up after yourself. We all must do our part to preserve the parks, so that everyone can experience the wonders they have to offer for years to come

- Get out of your car. Too many people drive through the parks, stepping out here and there for a quick view. To truly experience the park, get out and find a hiking trail.

- Save on park fees by getting a pass. A National Park Pass costs $50 and is good at all parks for one year. This will allow you to pass through the entrance gates more quickly and motivate you to visit more parks throughout the year.

388 Ways to Say, "Wow"

The United States goes to great lengths to preserve the best of its natural and manmade heritage. With 388 National Parks to choose from, millions of Americans enjoy this privilege, while millions more are welcomed to explore.

Travel agents can help you choose which park to visit, where to stay, and what you can do when you get there. And since most parks are unfortunately not in your neighborhood, travel agents can get you there with little cost and littler worries.