Mount Simlo Cave is one of Budapest's most valuable natural treasures. It has many spacious passages and presents a variety of fascinating forms. It is decorated with richly decorated mineral deposits. Visitors can walk around a walking path of about 250 meters on comfortable concrete sidewalks and stairs, and can identify deposits of basolite and gypsum crystals, almost unmatched in Europe, abundantly covering the walls. The cave's clear, dust-free air is a cure for patients suffering from Asthma and respiratory diseases.