Greetings, train enthusiasts! Detective Pux here, and today we're talking about the trains that you simply must ride at least once in your lifetime. Get ready for a whistle-stop tour of some of the world's most famous and exciting rail journeys.

First up is the Trans-Siberian Railway, stretching from Moscow to Vladivostok, Russia. This iconic journey covers a distance of over 9,000 km and passes through some of the world's most remote and breathtaking landscapes. From the rolling hills of Russia to the snow-capped peaks of Mongolia, this is a journey not to be missed.

Next on the list is the Shinkansen bullet train in Japan. This high-speed rail system offers an unparalleled travel experience, with trains reaching speeds of up to 320 km/h. From the bustling streets of Tokyo to the serene beauty of Kyoto, the Shinkansen is the perfect way to see the best of Japan.

For those who love scenic rail journeys, a trip on the Rocky Mountaineer in Canada is a must. This iconic train journey takes you through the stunning Rocky Mountains, offering breathtaking views of the rugged landscape and wildlife.

For those who love a touch of luxury, a trip on the Venice Simplon-Orient-Express is a must. This iconic train offers a luxurious and nostalgic journey from London to Venice, passing through the rolling hills of France and the stunning Swiss Alps.

Another must-ride train is the Royal Rajasthan on Wheels, India. This luxurious train journey takes you through the rich history and culture of India, offering a glimpse into the lives of royalty and the vibrant culture of the region.

For history buffs, a trip on the Durango & Silverton Narrow Gauge Railroad in the United States is a must. This historic railway offers a glimpse into the country's rich railway heritage, with vintage trains chugging through the breathtaking scenery of the American Southwest.

And finally, for those who love a bit of adventure, a trip on the Death Railway in Thailand is a must. This iconic railway was built during World War II and offers a unique and challenging journey through the rugged landscape of Thailand.

In conclusion, these are just a few of the trains that you simply must ride at least once in your lifetime. Whether you're a railway enthusiast, a history buff, or simply a traveler at heart, these trains offer a once-in-a-lifetime experience. So, get ready to hop on board and explore the world by rail! This detective is signing off.