Kazakhstan

There are both old and new trains in Kazakhstan including a new high speed train book your tickets on the Kazak rail website. On the upper right drop down menu click on "AFЫДШЫНШa" to select English. Unfortunately, the locations are in still in Russian. Here is a translation of the more popular stops:

Astana: АCTAHA
Almaty: АЛМАТЫ
Karaganda: КАРАГАНДЫ
Shymkent: ШЫМКEНT

Serbia

 The Belgrade to Bar is a great train ride.

Sri Lanka

 The ride from Kandy to Ella is one of the great scenic train rides. Ella is the heart of the tea plantations.

Turkey

The Doğu Ekspresi tourist class train is a sleeper train that goes from Ankara to Kars (near the border of Armenia) in about 30 hours.