Split in two by the Danube River, Budapest is the result of the merging of three cities. Buda is the hill with the royal palace and an old town filled with baroque and gothic monuments looking over the mostly-19th century Pest, crossed by broad avenues lined with elegant neo-renaissance buildings. Admire its setting and remarkable architecture (including the stunning Parliament Building) from the monumental Chain Bridge, and step into the old town for some of the most romantic lanes you'll ever stroll through.