The world’s longest wooden fish ladder helps migrating chinook (aka king) salmon on the final leg of their epic journey. As young smolts, they migrate downstream to the Bering Sea. After three to five years, they reenter the Yukon River and begin the two-month 3,200-kilometer (nearly 2,000-mile) swim back to their home waters. The lucky ones—a tiny percentage—will make it to spawn and die there. This 366-meter (1,200-foot) chute allows the salmon to skirt the Whitehorse Dam and avoid its turbines.