Golden Gate (San Francisco, CA)
For a perfect San Francisco adventure on the water, make a date with Mitch Powers, senior guide at Sausalito-based Sea Trek. There are plenty of places to kayak (it is the City by the Bay, after all), but Paddle the Gate ($85) is the trip you want to sign up for. You'll never forget that eerily calm morning when you cruise under the massive stretch of orange steel, the Marin Headlands rising up at your bow, and feel tiny and invincible at the same time. If you're looking for a full day outing, book the Angels Island Crossing.