Budapest became one of Central Europe's most popular tourist attractions in the 1990s. Attractions in the city include Buda Castle which houses several museums including the Hungarian National Gallery, the Matthias Church, the Parliament Building and the City Park
Hungary has an estimated 1,300 thermal springs, a third of which are used at spas across the country. Hungary's thermal waters and spa culture are promoted to tourists. Only France, Japan, Bulgaria, Iceland, and Italy have similar thermal water capacity. Hungary's thermal baths have been used for 2,000 years for cleansing, relaxation and easing aches and pains. The Romans were the first to use Hungary's thermal waters in the first century, when they built baths on the banks of the Danube River
There are two hundred known caves under Budapest, some of which can be visited by tourists and are a popular tourist attraction. In the Buda hills there are caves that are unique for having been formed by thermal waters rising up from below, rather than by rainwater. The Pálvölgy Stalactite Cave is a large and spectacular labyrinth.