A themed hotel is like a vacation within a vacation. A magical way for you to escape the extravagant city life for the confines of your princess palace, movie set or chocolate heaven. Here are some one-of-a-kind themed hotels and themed hotel rooms that offer a memorable and unique family vacation with something for everyone.

Hershey Park

A child's playground it wouldn't be Hershey without the chocolate! The Hershey's Kisses-shaped street lamps that line Chocolate Avenue signal your arrival. Sweet touches throughout your stay will remind you that you are in Chocolate Town, USA; and believe it or not, when it's about to rain, the air even smells like chocolate. With nine water attractions, ZooAmerica, home to over 200 North American wildlife animals, a free chocolate tour and make your own candy bar lessons, the 11 roaller coaster Hersheypark, it really is the sweetest place on earth. Literally.

100 Hotel Road. Hershey, PA 17033. http://www.thehotelhershey.com/

Barbie's Dream House

Las Vegas isn't just for adults anymore. With the Barbie Suite in the Palm's Fantasy Tower, every little girl's dream of living in the Malibu Dream House can now come to life. Designed by world-renowned interior designer Jonathan Adler, custom details like Barbie's skirted, lace-up "dress" chairs, a sunburst mirror made from 65 dolls and custom wall coverings in signature patterns bring Barbie's pink palace to fruition. And for the big kids, enjoy the extra-large Jacuzzi tub, two-way fire place amazing views of the Las Vegas strip.

Palms Casino Resort. 4321 W. Flamingo Rd. Las Vegas, NV 89103. http://www.palms.com/rooms/fantasy-suites/barbie-suite

Jules Underwater Sea Lodge

The famous underwater hotel in Key Largo, Florida, to actually get to the hotel one must actually scuba dive 21 feet beneath the surface of the sea. Entering through an opening in the bottom of the habitat, the feeling is much like discovering a secret underwater clubhouse. But don't worry, your creature comforts are still intact- hot showers, a well stocked kitchen (complete with refrigerator and microwave), books, music, and videos. A perfect balance of relaxation and adventure, whether you're a first time diver or a scuba pro, Jules is a once in a lifetime vacation not to be missed.

Jules Undersea Lodge at Key Largo Undersea Park. 51 Shoreland Drive. Key Largo, Florida 33037. http://www.jul.com/

Get Slimed at Nick

Every child dreams of getting slimed on Nick at Night. Well, now's your chance. From nightly shows in Studio Nick to temporary tattoo in the Kid's Spa, multi-sensory 4-D films, video games , arts and crafts and daily Mass Sliming, the Nickelodeon Resort is a once-in-a-lifetime vacation for the whole family. SpongeBob just might stop by to say hi too.

Nickelodeon Family Suites. 14500 Continental Gateway, Orlando, Fl 32821. http://www.nickhotel.com/

Fit for a Princess

From sleeping in a horse-drawn carriage to lounging in the "glass slipper" shaped whirlpool, bring your Cinderella fantasy to life as you live like a princess for the evening. 15 minutes outside of Indianapolis, there are plenty of family-friendly attractions in the vicinity like Brown County State Park and the Motor Speedway.

Greenwood Fantasuite. 1117 East Main St. Greenwood, IN 46143 http://www.greenwoodfantasuite.com/rooms.htm

See More Awesome Options in our Family Vacation Guide