The Talyllyn Railway in the Gwynedd region of north-west Wales holds a special place of all steam train enthusiasts.

It has been a part of Welsh steam culture since it was first opened in 1865 and has long held the prestigious honour of being the world's first preserved railway. Ever since that day it has delighted visitors from every point of the globe taking them on short trips through the picturesque countryside from Tywyn on the Cardigan Bay coast to Nant Gwernol.

Where the final destination was once where people hopped off and on to horse-drawn tramways into the mountains, this has since been replaced with hikers venturing into the Welsh forests. This year represents a very special occasion for the Talyllyn Railway as it celebrates its 150th anniversary and to commemorate the event, two locomotives have been given a makeover.

The No.1 Talyllyn and No.2 Dolgoch have been returned to their original "Indian Red" colour. The changes were made thanks to photographic archives which helped to determine what was the original livery of the locomotives. Their colour change is just one of the series of events going on throughout 2015 to celebrate the 150th anniversary.

Chris Price, the railway's general manager, told the BBC that the makeover has been well received with visitors and fans alike. It only took a matter of days for the pictures of the newly painted locomotives to generate 3,000 'likes' on Facebook.

"We were just stunned when the numbers just kept climbing and climbing. What people have also responded to is the quality of the work that has been done with many commenting that the overall finish is amazing," Mr Price said.

The two locomotives are not only the star attraction of the Welsh heritage railway but they also provided the inspiration to Rev W. Awdry to write the Thomas the Tank Engine stories.