Restaurants have been known to up their game by offering unique dining experience.  It's not about the food alone; they have experimented on different approach to create lasting impressions to its customers.  Some have gone as far as becoming bizarre. 

From having dinner in a pitch black restaurant down to eating while suspended 150 feet above the ground, one news site has listed the wackiest restaurants around the world.  You may want to try it or not, for your curiosity's sake, Business Insider has compiled the most bizarre restaurants so far.

So here goes the list:

1. Dinner By the Sky

An innovative dinner experience that can be enjoyed by 21 people and yourself seated at a table suspended by crane 150 above the ground in Brussels.

2. Restaurant made of Ice in Harbin China

The restaurant seats about 100 people and is part of the ongoing Sun Island Snow Carving and Ice Sculpture Exposition

3. Coolbaby Dog Restaurant in Beijing

Dogs can now go on dates as one restaurant offered dishes based on nutritional science and tailored-made for dogs of different kinds.

4. Commode-Themed Restaurant in South China's Guangdong Province

Customers can play cards while seated on toilet seats and food is served on miniature bath tubs and toilet bowls.

5. Opaque in West Hollywood, California

Customers dine in complete darkness served with a three-course meal by blind waiters.

6. Aurum Restaurant in Singapore

The now-shuttered restaurant served a unique cuisine using molecular gastronomy technique and used wheelchairs as their seats.

7. Restaurant inside a Dutch University in Wageningen

Food and research combined, much like eating in a Big Brother restaurant.

8. Blakes Restaurant in Liverpool, England

Photographs of The Beatles' Sgt. Pepper's Lonely Hearts Club album adorn the walls of the restaurant. 

9. Edelstein Cafe in Japan

Tokyo's official first schoolboy cafe where customers and waiters act scenes from Manga comics.

10. Un cafe con Peron in Buenos Aires

A statue of former Argentine President Juan Peron, a leading political figure in Argentina until adorns the restuarant.

11. The Exchange Bar and Grill in New York City

A stock market themed bar with prices of food and drinks fluctuating like stocks.

12. Hibaritei Cafe in Tokyo

Servers are all men dressed as maids.

13. Restaurant Served by Robots

Owner said the restaurant was bought $927,600 along with four robots.

14. Ithaa Undersea Restaurant in Maldives

Enjoy dining served 16 feet underneath the Indian Ocean.

15. The Pale Blue Door in Berlin

Restaurant is built using scrap materials got from streets, a unique attraction to the place.

16. Bus Restaurant in Liaonin Province in China

An old bus was transformed into a barbecue diner.

17. Restaurant with Robot Servers in Harbin China

Restaurant has 20 robots to serve customers.

18. Babie-Themed Cafe in Taipei

A 7,000 square-foot Barbie Cafe.

19. Heart Attack Grill

Hospital-themed diner complete with servers wearing hospital gowns.

20. Vienna's Cat Cafe

Customers can pet cats while dining.