The world's oldest working electric railway is swinging open its doors for behind-the-scenes tours.

On Saturday, visitors to the Volk's Railway in Brighton will even be able to take a look inside inventor Magnus Volk's old office, built into the cliffs near Dukes Mound, with parts of it dating back as far as 1836.

Magnus Volk's office in Dukes MoundMagnus Volk's office in Dukes Mound (Image: Google)

Railway volunteers are running services from the aquarium station to Black Rock throughout the day and into the evening, when the trains are illuminated with dozens of lights.

Three tour groups, at 11am, 12.30pm and 2.30pm, will be given exclusive access inside the railway's workshop and depot where an engineering train is stationed along with the ex-Southend Pier Railway car nine.

Experts will share their knowledge of the railway's past, present and future during the tours as it embarks on its 14th decade in operation, having won the 2024 Railway of the Year award from the Heritage Railway Association.

The tours are free but organisers say donations are welcome.

The Volk’s Railway - named after its creator Magnus Volk - opened on August 4, 1883, taking passengers from opposite the aquarium to the now-destroyed Chain Pier.

By 1901 the railway was extended to the route it is today, all the way to Black Rock near the marina where it has run ever since.

Trains are running from 10.15am to 8pm. Bookings can be made by contacting the mobile numbers on the Volks Electric Railway Association Facebook page.