Although the series was first broadcast over a decade ago, fans still travel to Wales to check out some of the most famous filming locations from across the series and Christmas specials. Most of the series - including many of the scenes that are meant to be in England - were actually filmed in and around the town of Barry.
We've pulled together a list of some of the must-visit stops for Gavin & Stacey fans looking for where it all took place. Get ready for a crackin' time.
Gwen and Stacey's house
Trinity Street, Barry
Halfway up this steep hill of terraces, you'll find the house that Stacey and her mum live in. You won't struggle to spot it, either, as the current owners have put photos from the show in the downstairs windows and have hung a sign that says they welcome conversations with fans.
Uncle Bryn's house
Trinity Street, Barry (Doris lives nearby)
A few metres from Stacey's house is that of Uncle Bryn and his big computer for surfing the world wide web (or should that be "whiskey with water"? Apparently, the family that lived there while the second series was filmed have a script from an unaired episode, one where they reveal what happened on THAT fishing trip.
Pam and Mick's house
Laburnum Way, Dinas Powys
In the show, Gavin's parents live one country away from Stacey's family. In reality, the filming locations are more like one train stop away from each other! The house is on a quiet road in the sprawling village of Dinas Powys, so when there's filming taking place – like that for the 2019 Christmas special – all of the locals know exactly what's going on.
This bright blue coffee shop featured in the very first episode of Gavin & Stacey. Come series three, Stacey has a job there. During filming, the owner actually taught James Corden how to make a decent coffee. He even served the customers on one occasion!
Island Leisure Amusement Arcade, Barry Island
Gather your coppers and take a trip to the arcade where Nessa worked the slots. Everything about it is just like in the show – the flashing machines, the background noise of kids playing on games and the good British seaside vibes. The A-board outside it says, 'Nessa's Slots – Come and see what's occurrin' ', so many people do.
Smithy's local, the Colcot Arms
The Colcot Arms, Colcot Road, Barry
Remember Smithy's drunken quiz night in the second episode? Despite being set in Billericay, it was actually filmed at the Colcot Arms in Barry. The real pub quizzes that go on in there are somewhat tamer! Find out more on the Colcot Arms Facebook page.
Gavin & Stacey's wedding reception
After the main couple's wedding, which was filmed in St Cattwg's Church in Llanmaes, everyone flocks to the wedding reception. Most of the scenes were filmed in the Cedar room, while some of the outdoor spaces were used for the awkward conversations that took place between Nessa and Smithy and Bryn and Jason. The front looks slightly different now, as it has been refurbished with a new porch, but it's still recognisable.
Visit the Vale has more details about Gavin & Stacey filming locations, plus plenty of useful info for visiting Barry and the surrounding area.
For behind the scenes info and clips, head to the BBC's Gavin & Stacey web pages.