Ligne de Čermeľ à Alpinka, also known as the Čermeľ-Alpinka Line, is not located in Prague, but in the city of Košice, Slovakia. It is a popular tourist attraction for both locals and visitors. Here is some information about this place:

History:
The Čermeľ-Alpinka Line is a historic narrow-gauge railway that was originally built in the early 20th century. It was primarily used for transporting timber from the surrounding mountains to the city of Košice. However, with the decline of the timber industry, the railway was eventually converted into a tourist attraction.

Attractions:
Today, the Čermeľ-Alpinka Line offers a scenic journey through the beautiful Slovak countryside. The train ride takes you through picturesque landscapes, including forests, meadows, and small villages. It is a great way to experience the natural beauty of the region.

Tips for tourists:
1. Schedule: The Čermeľ-Alpinka Line operates during the summer season, usually from May to September. It is advisable to check the schedule in advance to plan your visit accordingly.

2. Train ride: The train ride lasts approximately 2 hours, including a stop at the Alpinka station. You can either take a round trip or get off at Alpinka and explore the surrounding area before catching a later train back.

3. Nature walks: Alpinka station is a great starting point for various nature walks and hikes. There are well-marked trails that lead you through the nearby mountains, offering breathtaking views of the surrounding landscape.

4. Photography: The Čermeľ-Alpinka Line provides many picturesque photo opportunities. Make sure to bring your camera to capture the stunning scenery along the way.

5. Snacks and drinks: While onboard the train, you can enjoy snacks and drinks available for purchase. However, it's always a good idea to bring some water and snacks with you, especially if you plan to spend time hiking in the area.

Visiting the Čermeľ-Alpinka Line in Košice is a unique experience that allows you to immerse yourself in the natural beauty of Slovakia. Whether you are a nature lover, a history enthusiast, or simply looking for a relaxing day trip, this scenic railway is definitely worth a visit.