"Famed for its jewel-like shape and colors," Emerald Bay, which was "carved by a massive glacier millions of years ago," provides "one of the don't-miss views of Lake Tahoe," raves Fodor's. For $19 per person, explore South Lake Tahoe and this renowned area on a two- to 2.5-hour cruise with Zephyr Cove Resort Lake Tahoe Cruises, regularly $39.