In Italy, starting in October, the 'Truffle and Wine' tourist train will launch between Milan and Alba, promising an exquisite journey into the heart of Piedmont, among hills, vineyards, and villages (I confirm, it's ultra-beautiful there).

The train will consist of vintage 1970s Gran Confort carriages, with the first departure on October 11 and then once a week, every Sunday: at 9:20 AM from Milan and at 6:20 PM from Alba.
For now, I see tickets only for October in the schedule.

Ticket prices: from €69 one way for adults, €34.50 for children aged 4–12, and free for children under 4.

You can buy tickets here, but Trenitalia has many similar programs; you can view them all here, there's some real beauty there.