Highlights of day 4 in Budapest - we walked up the hill to the Citadel (Citadella), a fortification built in 1851. In 1956 it was occupied by Soviets troops who fired upon the city. As the high point in the city, there is a fantastic view. We also attended a wine tasting in Buda Castle Labyrinth, which is a set of elaborate tunnels and caves six miles long with origins from prehistoric times. The labyrinth’s rich history includes the 15th-century prison for Vlad Tepes, better known as Count Dracula, and more recently a shelter and hospital during WWII. The day ended with some cocktails in a heated igloo on top of a building at 360 bar.