Slanic Prahova Saline is the largest salt mine in Europe. Now the old mine is currently open to the general public, being used as a leisure place. Slănic Prahova Saline is located at a depth of 208m, on an area of ​​53,000sqm and was opened for visit after 1970. The saline consists of 14 rooms, in the form of a trapeze, having an opening at the base of 32 meters, the tray, 10 meters and a height of 45 meters. The excavated space is 2.9 million cubic meters of salt. Underground is also a sanatorium for asthmatic patients who are provided specialized medical care. The ventilation of the mine is natural, with a constant temperature throughout the year of 12 degrees Celsius. Inside salt mine we visit the Supernova Planetarium which is the largest and most performant planetarium in Romania with the largest spherical screen of 16 m diameter, max. 200 seats, 4K laser projectors, super-ergonomic armchairs. We look forward to the most fascinating immersive experience in Romania.

Muddy Vulcanoes is a geological and botanical reservation located in Buzău County in Romania. Its most spectacular feature is the mud volcanoes, small volcano-shaped structures typically a few metres high caused by the eruption of mud and natural gases. As the gases erupt from 3000 metres deep towards the surface, through the underground layers of clayand water, they push up underground salty water and mud, so that they overflow through the mouths of the volcanoes, while the gas emerges as bubbles. The mud dries off at the surface, creating a relatively solid conical structure resembling a real volcano. The mud expelled by them is cold, as it comes from inside the Earth's continental crust layers, and not from the mantle.