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
American Queen Steamboat Company Mississippi River Cruise
You don't even have to leave the country for some of the world's most luxurious boating excursions.
Each five- to 10-day trip on this Victorian-decorated vessel recalls antebellum heydays, complete with large orchestra music, stops at historic cities, southern family cooking and lectures from an onboard "riverlorian."
Various themed trips are offered.
"Southern Culture" is a match for the history buff; "Fall Foliage" is good for those who want nothing more than to sit in a rocking chair and be mesmerized by natural beauty.
American Queen Steamboat Company; +1 800 749 5280; from $950
Royal Caribbean, Oasis of the Seas
If you want to cruise purely to enjoy a massive adult wonderland, Royal Caribbean has made a seafaring behemoth of activity for you.
The 225,282-ton Oasis of the Seas is so gargantuan it contains 25 restaurants, 2,394 crew members and seven themed "neighborhoods."
There's Central Park (a garden lined with restaurants, bars and shops), The Pool and Sports Zone, Vitality at Sea Spa and Fitness Center, Boardwalk (theater, pool and rock climbing), Royal Promenade, Youth Zone and Entertainment place.
There's also a zip line, water park, casino, theater, mini-golf course, ice skating rink and basketball court.
Travelers can choose trips to the Bahamas or Caribbean, but what's the difference when you're on the world's greatest mobile theme park?
Royal Caribbean; +1 866 562 7625; from $369
Royal Caribbean, Quantum of the Seas
Come November 2014, Royal Caribbean will be unveiling a boat even grander than the Oasis -- the Quantum of the Seas.