New York's Thousand Islands region seems made with nautical tourism in mind. Glass-topped catamarans, triple-decker cruise boats and majestic paddlewheelers ply the waters, taking visitors past Boldt Castle and the mansions of Millionaire Row, Kingston Penitentiary and Fort Henry, all while offering interesting insight into the history of this scenic destination.
Photo courtesy of Prayitno

There's no better view of the power and grandeur of Niagara Falls than from the decks of the Maid of the Mist, a series of boats that get passengers up close to the falls, where the roar of 600,000 gallons of falling water is deafening and the "mist" can feel more like a downpour. The Maid of the Mist is the only way to see the falls by water on the American side, and while the included blue rain poncho isn't required, it's highly recommended...
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Thanks in large part to the Washington State Ferry system, visitors to Seattle have an easy and affordable way to experience the sights and sounds of Puget Sound by boat. One of the most popular ferry routes travels between Seattle and Bainbridge Island, offering views of the city skyline and snow-capped peak of Mt. Rainier along the way. Another ferry heads through Puget Sound and on to the San Juan Islands, where passengers might spot sea lions, orcas and migrating whales.
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Taking a boat ride through Alaska's majestic Inside Passage is like seeing America at its wildest. Whale watching, gold rush history and Native Alaskan culture abound, and you need not book passage on a pricey cruise ship to enjoy this great American boat ride; the Alaska Marine Highway System ferries offers an inexpensive, less crowded way to see one of Alaska's most beautiful areas.
Photo courtesy of Eli Duke

The Grand Canyon is certainly impressive from its rim, but wait 'til you see it from the bottom. One of the most popular ways to experience the Grand Canyon and the Colorado River which flows through it is by rafting through it, pulling up on various boat beaches to camp out under the stars or in historic Grand Canyon cabins. Visitors who prefer not to paddle can also float below the towering canyon walls on a pontoon or motorized raft.
Photo courtesy of Grand Canyon National Park

One of the most famous boat rides in Texas takes passengers on an informative journey along San Antonio's famous River Walk. Floating along the shaded waterways, beneath stone footbridges and past al fresco restaurants and historic sites, makes a River Walk cruise the perfect way to get oriented for further exploration. The Rio Taxi offers a quick and easy way to get between 39 River Walk hot spots, so you can give your feet a rest.
Photo courtesy of San Antonio Convention & Visitors Bureau

An architectural tour by boat is one of the highlights of any visit to Chicago.  Not only are you amazed by the beautiful color of the water, you learn the history of the city while seeing iconic landmarks and learning how they tie in to names you've heard your whole life, Chicagoan or not.  It's a highly memorable and appealing way to spend a half day in this popular destination.
Photo courtesy of ©City of Chicago

Whether or not you've had a margarita, are "wasted away," or hope to be soon, a Florida Keys sunset by boat is an iconic American experience.  While any western side of a Key will do, the supreme boat tour might well be from Key West. Here, sailboats in the sunset make landlubbers sigh with envy, while ticket purchasers for late-day glass-bottom boat tours get double the pleasure as the sun sinks. Docking near Mallory Square's nightly celebration makes the experience complete.  
Photo courtesy of Serge Mashtakoff

Taking a boat ride through New York Harbor offers some of the very same views countless immigrants to the U.S. witnessed upon their entry, including the symbol of our freedom, the Statue of Liberty. One of the best value boat rides in the country is the free Staten Island Ferry, a free 25-minute trip from Lower Manhattan to Staten Island, passing Lady Liberty and Ellis Island along the way. The sightseeing-dedicated Circle Line maintains a schedule of themed harbor tours.
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Standing directly over the haunting site where the U.S.S. Arizona was sunk on Dec. 7, 1941 is so somber a moment, you can almost hear your own heart beating.  The Japanese assault on America's Hawaiian naval base destroyed nearly 20 vessels, including eight enormous battle ships.  USS Arizona held 1,000 of the 2,000 U.S. servicemen lost that way and was never retrieved.  The ferry boat ride to and from the harbor's USS Arizona Memorial is one you never forget.       
Photo courtesy of Hawaii Tourism Authority (HTA) / Tor Johnson