1. Werfen Ice Caves (Eisriesenwelt) is one of the largest ice caves in the world, located near the town of Werfen in the Salzburg region of Austria. The cave system extends for over 42 km, with the tourist section being around 1 km long. The cave is formed by underground rivers and streams that flow through the rock and freeze during winter, creating stunning ice formations. Some of the most impressive features of the cave include huge ice formations, crystal-clear ice stalactites and stalagmites, and ice sculptures that seem to defy gravity. The temperature inside the caves is usually around 0°C, so visitors should dress warmly.

2. The caves are open to visitors from May to October. The working hours vary depending on the time of year, so it is best to check the official website for accurate information. The phone number for the caves is +43 6468 5248.

3. Visitors can buy tickets either online or at the cave entrance. The ticket price includes a shuttle bus that takes visitors from the village of Werfen to the cable car that transports them up to the cave entrance. The cable car ride is quite steep and can be a bit daunting for those with a fear of heights. Visitors should wear sturdy shoes for walking on the uneven cave floor and bring a flashlight if they have one, as the caves are quite dark inside. It is not possible to visit the caves independently; visitors must take part in a guided tour that lasts around 70 minutes.