The Signature collection, which features 40 tours for a maximum of 25 guests, will offer three "new and enhanced" trips.
Guests on a week-long tour will have up to three Signature experiences included, with a tour of fewer than seven days having up to two Signature experiences.
Joanne Lynn, head of product Europe and transport at Riviera Travel, said the new offering will be an "exceptional, exclusive option" and offer the "very best in immersive, engaging" travel.
"Guests can go from discovering the secret to how traditional Argan oil is made in Morocco, to gliding over Vancouver in a seaplane, to visiting a tranquil lemon grove on the Amalfi coast to learn about the local gastronomic secrets and tradition," she added.
The new itineraries, which were inspired by an uptick in Riviera’s small group touring options launched during the pandemic, come in addition to the brand’s current escorted tour programme for 2023, which is now on sale.
According to Will Sarson, Riviera’s head of strategy and innovation, customers are looking to upgrade their holidays with extensions and premium tours.
"The experiences are chosen by experts," he continued. "We really wanted to get under the skin of the destinations to give guests the chance to truly experience the places they visit.
"In 2021/22 the brand had small group options on its tours, and they became very very popular, with a number of customers requesting upgraded holidays."