For not-so-intrepid travelers, cruises are perfect.
Outside of getting yourself to the departure port, you don't need to plan anything to have a successful trip.
To make that ocean-going vacation as effortless as possible, we've assembled a list of the cushiest cruises departing from the United States.
Linblad Expeditions, Alaska cruise
With 340,000 miles of some of the Western Hemisphere's most awe-inspiring coastline, you'll realize why the U.S. government dished out $7.2 million to take Alaska off Russia's hands.
True, the scenery had little to do with the controversial purchase then known as "Seward's Folly," but it's now one of the country's greatest assets.
One of the most engaging ways to explore this national treasure is with Lindblad Expeditions and its partner, National Geographic.
Experts in marine biology, geology and botany take travelers out into the ocean on smaller crafts and provide an intimate look at glaciers, grizzly and marine life.
An underwater hydrophone allows guests to listen to the songs of whales, orcas and dolphins.
Linblad Expeditions; +1 800 397 3348; starts at $5,990
Celebrity Cruises, Immersive Wine Cruise
If you want to do the wild West Coast without walking on an ice floe, Celebrity's Immersive Wine Cruises take you to British Columbia, Seattle, San Francisco, Monterey and San Diego, and visit some of the finest wineries in the Pacific Northwest.
The tasting doesn't end when cruisers leave dry land -- sommeliers are available to help passengers choose from about 500 selections of wine on board.
Celebrity Cruises; +1 888 245 4254; starts at $800
Azamara Club Cruises, Panama Canal Cruise
Azamara Club Cruises offers a trip that departs from one U.S. coast and arrives on the other, by passing through the Panama Canal.
Along the way, the ship hits 26 ports in 12 countries, including Costa Rica, Belize, Mexico, Colombia and Jamaica.
At each destination, Azamara provides longer, more immersive excursions than most other cruise lines.
The most memorable part of the trip is coasting through 58 miles of waterway that wouldn't exist if tens of thousands of workers hadn't risked or given their lives to build it.
Azamara Club Cruises; +1 877 999 9553, call for pricing
Cunard, Queen Mary 2, transatlantic cruise
In 2004, the Queen Mary 2 became the first transatlantic passenger liner built in 35 years.
Its classic design and decoration embody an adoration of world travel that predates even her predecessor, the half-sized Queen Elizabeth 2, which reigned from 1969 to 2008.
While the eastbound cruise departing from New York City only makes a stop at Southampton, UK, before arriving at Hamburg, Germany, the majestic ship's spa, theater, library, ballroom and planetarium keep you stuffed with things to eat, see and do throughout the nine-day cruise.
Cunard; +1 800 728 6273; from $1,600