Based on popularity and guest reviews, the best Hop-on Hop-off & City Tours in Budapest are: Budapest: Big Bus Hop-On Hop-Off Sightseeing Tour Budapest: Floating Bus Tour by Land and Water Budapest: Grand City Tour with Parliament Visit Budapest: 3-Hour Grand City Tour and Castle Walk Budapest: Official Buda Castle Electric Hop-On Hop-Off Bus Budapest: 3-Hour Live Guided Sightseeing Tour Budapest: Private eBeerBus Sightseeing Tour Budapest: 4-Hour Guided Bus Tour with River Cruise Budapest: City Discovery Tour Budapest: Sightseeing Tour by an Electric Tuktuk