Towering above Toronto's skyline since 1976, the 1,815-foot-tall CN Tower was the world's tallest freestanding structure for over three decades.

This busy tourist attraction in downtown Toronto is home to the Western Hemisphere's highest observation platform, the Top, located 1,456 feet above ground. On sunny, cloudless days, it's possible to see as far as Niagara Falls and the state of New York. Remarkably, visitors can also feel the sensation of the giant tower swaying in the wind. Those looking for even more of an adrenaline rush can step outside and (attached by harness) wander around the tower's perimeter via the EdgeWalk, which sits 116 stories above Canada's largest city. Another popular attraction is CN Tower's revolving 360 Restaurant, which completes a full rotation in 72 minutes.

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7 of America's Most Bizarre Tourist Attractions

There's no shortage of interesting tourist attractions in America, but some are stranger than others — and they'll certainly make for good stories when you return home. Here are seven of the weirdest tourist attractions in the U.S.

8 U.S. City Libraries Bookworms Shouldn't Miss

Surely, landmarks such as the Library of Congress in Washington, D.C., and the New York Public Library are on any bibliophile's must-see list, but the U.S. is also home to many other stately libraries well worth a visit. Here are eight other American libraries that are bound to impress.