Tim Dunn explores the ornate St Pancras station in London and its sister hotel – built to show off the might of the Midlands. He also learns about the station built for Castle Howard and a new Swiss funicular that keeps a mountain village connected.

Tim Dunn looks inside the former HQ of London Underground, 55 Broadway, which was the capital's first skyscraper. He visits the rural Norfolk station that used to serve the monarch's Sandringham Estate and sees the timber-framed Barmouth Bridge in north Wales.