Budapest is special in the sense that it is built over an enormous network of caves strecthing under the Buda and other surrounding hills. The most spectacular caves of the area are found under Szépvölgy-Rózsadomb at the foot of Hármashatárhegy. The best-known cave is Pál-völgyi Cave that has been listed since 1944. The landscaped quarry yard with a size of 4000 sq m that is bordered by impressive stone walls is a popular site for weddings, corporate and family sports events, birthday parties, classical concerts and teambuilding exercises. If required, tents can be erected on the large, grass-covered area offering a perfect site for meals, performances or press conferences.