1. The Amstel River is a famous waterway that runs through the city of Amsterdam in the Netherlands. It is referred to as the heart of the city, as it has played a significant role in the city’s development and history. One interesting fact about the Amstel River is that it was named after the word \"Aeme-stelle,\" which means \"water area where the rivers meet.\" The river is approximately 31 kilometers long, and it flows into the IJ Bay.

The Amstel River is surrounded by many notable landmarks and attractions, including the Hermitage Amsterdam, the Carré Theatre, and the Magere Brug (Skinny Bridge). Along the river, visitors can also find many cafes and restaurant terraces where they can enjoy beautiful views of the waterway.

2. The Amstel River is open 24 hours a day, seven days a week. There is no phone number available for the river, but visitors can contact the Amsterdam tourist information center for more information at +31 20 702 6000.

3. There is no ticket required to visit the Amstel River, and no transportation is needed as the river is accessible by foot or by bike. Visitors can also take canal boat tours that pass by the Amstel River, which offer a unique way to see the sights of Amsterdam from the water.