National Geographic Journeys and G Adventures have added eight new trips to their National Geographic Journeys collection, which is now in its fifth year.
For 2020, Ireland, Singapore and Greece make their debut in the range which offers 91 holidays in 54 countries.
Brian Young, G Adventures’ managing director for EMEA, said: The new trips are a direct response to the feedback travellers have been giving us about the places they most want to explore next.
“The new journeys will bring people to some of the most in-demand travel destinations on Earth, but in a way that is more authentic, immersive and sustainable than the typical vacation.”
The new Iconic Ireland holiday costs from £2,149 for nine days, while the 12-day Greece: Ancient Ruins & Iconic Islands costs from £2,199.
Singapore is featured in the 15-day Singapore to Bangkok Journey, which costs from £2,249, and the Singapore, Malaysia, and Thailand Explorer, which costs from £2,999 for 22 days.
Prices for the new tours start at £1,599 for the nine-days Cultural Wonders of Mexico, which visits Mexico City, Puebla and Oaxaca.
The holidays include excursions and accommodation but not flights.