From Ninja Servers To Cat Cafés: 9 Unusual Theme Restaurants (Slideshow)

For those who love cats and coffee, Café Neko in Vienna is the ultimate destination. The café, named after the Japanese word for cat, "neko," serves a standard café menu of drinks and small bites while several cats roam freely around the room. The purpose of the café is so that people who can't own pets can come in and interact with the cats while they enjoy a cup of coffee. 

Would you be comfortable being called "master"? Located in Tokyo, this café has male servers who dress up as maids. They wear costumes, wigs, and even call customers "master" to keep with the theme.

The theme of Alcatraz ER restaurant in Tokyo — a "prison hospital from hell" — is definitely a bit eerie and frightening. They certainly don't shy away from their theme, either, serving strange menu items such as the "human intestines," which are long sausages in a kidney dish, or the Nounai Hassha Brain Buster, a vodka cocktail served in a life-sized mannequin head.

Who knew the largest coffin in the world is a restaurant? Eternity Restaurant in Truskavets, Ukraine, has dishes with names such as the "Let's Meet in Paradise," and single candles on tables to contribute to the "funeral mood."

Servers dressed like ninjas dropping down from the ceiling are the norm at Japanese restaurant Ninja in New York City. The unique design of the restaurant consists of a long maze leading to the dining room, with the goal of even further setting the scene of dining in a Japanese mountain village.

This grill treats its customers like patients, refers to orders as prescriptions, and has scantily clad nurses serving you food that definitely reflects the name: The 8,000-calorie Quadruple Bypass burger, Flatliner Fries deep-fried in lard, and a Butterfat shake, are few of the bizarre high-fat menu items. The controversial restaurant also lets diners who weigh more than 350 pounds eat for free.

At Modern Toilet, you should avoid judging your meal by how it looks — dinner here is served to you in a toilet. This Taipei restaurant seats diners on porcelain bowls at sink tables, offering menu items such as Korean kimchi hot pot or beef curry, served in Western-style toilet bowls, and ice cream swirls delivered to diners in squat toilets. If you're looking to try the toilet-dining crazy but not leave the U.S., a Los Angeles suburb has recently become the home of the first toilet-themed restaurant in the U.S.

As bizarre as the name might sound, this Bangkok restaurant supports a good cause; Cabbages and Condoms opened to raise awareness about family planning and combat Thailand's high rate of HIV. While the restaurant website's greeting line, "Our food is guaranteed not to cause pregnancy," is quite comical, the food itself is definitely no joke.  The exceptional Thai menu offers dishes such as hot and sweet roasted duck with coconut milk and green pepper, and deep-fried chicken with prawns and black mushrooms, all served under the glow of light fixtures decorated with condoms. Diners can also take a complimentary condom or two as they leave the restaurant. Proceeds from the restaurant go toward the Population and Community Development Association.

Though it's easy to think differently judging by the name, this Alice in Wonderland restaurant keeps things family-friendly. Bunny tails on the chairs, a big clock against one wall, a Mad Hatter Tea Party room, and a giant lamp deepen the illusion that diners have shrunk and are all part of this "wonderland" experience. The food is also presented in Alice-themed ways, with some appetizers served on a chessboard, and pizzas made to look like playing-card soldiers. And of course, all servers are dressed like Alice.