Március 15. tér features tall, Classicist-style buildings, built at the beginning of the 19th century. One of these has the famed Mathias Cellar Restaurant, which is over 100 years old. The 140-metre-high Gellért Hill, with the Citadel on top is the highest point of downtown Budapest. From the Pest side, it's easy to understand why the Gellért Hill has always served defense purposes: it's the single most important strategic point of town.