Name: Mermaid Castle Siam

Address:  Siam Square soi 2, Bangkok.


BTS: Siam. (Take exit 2 and turn left after the Lido theatre down soi 2. It will be on your left hand side. Aprox 2 minute walk).

Phone Number: 093 982 4022

Price: Entrance free. Frappe 140 baht, savoury items 150 baht, cupcakes and cakes 60-90 baht, tea and soda 60-90 baht.

Opening Times: 11 am – 9 pm (everyday)


Formerly known as ‘Mermaid Island Cafe’ and located outside of Bangkok, this mystical cafe has now re branded as ‘Mermaid Castle Siam’ and moved to central Bangkok. When we attempted to visit on its opening day there was a two hour queue, so we gave up. However, when we returned a week later we were very excited to find we only had to wait a few minutes to be seated.

Mermaid Castle Siam consists of four floors;  three floors packed full with mermaid inspired objects and articles, and the fourth floor hosting the cafe. When entering the castle you will be overwhelmed with all the jewelry, shoes, clothes, accessories and gadgets that you can find related to these mystical creatures of the sea. For those interested in all magical creatures there are plenty of unicorn inspired goods too.

All the walls are decorated in bright colours and are filled with murals and slogans to keep your eyes busy.


The cafe itself is smaller than we imagined, but still worth the visit. You can opt for less exciting savoury dishes such as creamy omelet, spicy spaghetti, rice with pork ribs and spicy wings or the more fascinating and sugar filled treats such as mermaid cupcakes, mermaid shells and vibrant drinks.

The cafe also do a signature set which combines cakes and tea and they are served in teapots inspired by Disney characters.

However, the biggest draw? The opportunity to wear a mermaid tail and pose with different under the sea themed props. The staff are happily on hand to help you get that perfect pose and capture the perfect shot.

We would definitely recommend a visit but would maybe suggest visiting during the week to avoid the crowds, and to ensure you can have your pick of mermaid tail colours and sea themed props.