- Adam Leyton, Chris Fletcher
- 15 total number
- Netherlands (Beemster)
The most UNESCO world heritage site visits in 12 hours is 15 and was achieved by Adam Leyton and Chris Fletcher (both UK) in Beemster, Netherlands, on 14 November 2019.
This record was attempted in celebration of GWR Day 2019. The due also achieved 'Most UNESCO world heritage site visits in 24 hours' during their journey.