Over the years, the restaurant industry has turned to a variety of quirky concepts to draw customers, from dining in complete darkness to restaurants that replicate a famous TV or movie set.

With the rise of social media networks — Instagram, in particular — unique restaurant features can spread like wildfire as customers are now sharing pictures of more than just their food. For restaurateurs, that translates into free marketing and even the ability to charge customers more for the experience.

Some of the latest offbeat concepts not only help restaurants set themselves apart from the competition, but also tackle industry-wide problems like rising labor costs or limited seating. Without the scale of the largest restaurant companies, some businesses are thinking outside of the box.

Here are four unconventional restaurant concepts that are taking off: