The cast of 'It's Always Sunny In Philadelphia' has everyone wondering whereabouts in the country they are.

The gang is in the country - but we're not sure where exactly. The cast of 'It's Always Sunny' has been sharing some pictures in Ireland as they film the new series of their sitcom.

Stars Rob McElhenney and Kaitlin Olson, who play Mac and Dee in the comedy, took to Instagram to share some snaps from a shoot on location. Posing in front of a foggy, coastal location, they're joined by their co-stars Danny DeVito, Charlie Day and Glenn Howerton.

Check out the pictures below.

Kaitlin captioned her three pictures with: "#Location shoot. Don’t scroll to the end if you don’t want to jizz all over your office desk."

The cast of 'It's Always Sunny In Philadelphia' are busy touring around Ireland for season 15 of their hit series. However, it's difficult to say exactly where they could be due to the foggy weather - The Cliffs of Moher in Clare, Malin Head in Donegal or the coast of Kerry are all suggestions from fans who commented on the actors' posts.

Back in August, the gang were on the hunt for a Danny DeVito lookalike in Dublin for a stunt they were shooting for the series. With the cast still here a month later, it seems likely that more than just one episode will see them take in the sights around Ireland. We reckon that the characters are here to visit their long-lost Irish relatives or something along those lines, with them being of Irish descent and running an Irish pub in Philly.

Last year it was confirmed that 'It's Always Sunny' will run for a further four seasons, which will see the crude comedy become the longest-running live-action comedy series ever made, breaking a record that it has already set by itself.

Until season 15 hits our screens, be sure to watch out for the bird and the rest of the gang as they go on more ludicrous adventures around the country.