Quite literally hidden behind a secret door in a taco joint, Hiden serves up a high-end omakase menu, meaning that diners get whatever the chef is cooking.
There are only 10 seats at this sought-after restaurant in Tokyo and bagging a table here is a serious feat.
The restaurant is located within the exclusive W Punta de Mita resort, and guests can book the table for up to 12 people to enjoy a customisable seven-course tasting menu.
Another restaurant claiming to be the smallest in the world, this one is located in a reconstructed water gauge house right above the river Elbe in Hamburg.
The seven-seat Sushi Tetsu is hidden behind a door in a central London tunnel and is one of London's toughest to book restaurants.
And in Belle Harlem diners are typically quite literally brushing shoulders with strangers when sat at their 12-seater communal table.
Part of Ibiza's Hard Rock Hotel, Sublimotion combines trippy projections with an exquisite 20-course dinner.
Halfway across the world you'll find another restaurant with a similar concept serving just 10 guests a night.