Step inside the grand suites on the world's most famous train, which start at $26,000 a night and come with around-the-clock butler service

Grand suites are the most expensive accommodation aboard the luxurious Venice Simpon-Orient-Express sleeper train.Joey Hadden/Business Insider

• The Venice Simpon-Orient-Express is a luxury overnight train in Europe.
• The train's grand suite, starting at $26,000 a night, is the top tier of accommodation.

Hundred-year-old carriages from the Orient Express fleet make up the Venice Simplon-Orient-Express, Belmond's revamp of the iconic luxury sleeper train. With 60 routes in 17 cities, the Venice Simplon-Orient-Express is perhaps the most luxurious train in Europe. Prices start at $9,000 a night.

The train's top-tier accommodation is a grand suite. With a starting rate of $26,000 a night, these rooms are filled with luxury details and amenities unique to any other cabin on board, from a private shower to around-the-clock butler service.

Business Insider recently took a tour of the rooms as a cabin steward explained the details of each suite.

Look inside the train's most extravagant accommodations to peek at the luxury journey of a lifetime.