The Obamas were in Australia last month as part of a speeches by the former president.
It was reported that he earned an estimated $1 million from the sold-out tour, which included an online event for $400 per person.
The successful event’s ‘Platinum Package,’ which cost $895, included a welcome cocktail over an hour-long social gathering, a commemorative cord, and a signed copy of Obama’s memoir A Promised Land.
‘Barack and I just got back from Australia and we loved every minute of this trip!’ Michelle said in her caption.
‘From visiting the famous Sydney Opera House to exploring the beautiful wildlife to catching up with great friends, this was the perfect first visit for me’ she continued.
‘I am so grateful for the generosity and hospitality the Australian people showed me and Barack everywhere we went.
‘I’ve been wanting to visit for such a long time, and can’t wait to go back!’
Michelle included some eye-catching intimate snaps in her story.
In one sweet pic, the mother-of-two can be seen getting up close and personal with a large koala during a visit to the Moonlit Sanctuary Wildlife Conservation Park near Melbourne.
Dressed casually in jeans, white-T and head-band, a clearly enchanted Michelle can be seen stroking the large marsupials back.
The author and lawyer can be seen in another charming pic feeding a wallaby.
Also, Michelle posted another photo that features the Obamas surveilling the magnificent and recently renovated main concert hall at the Sydney Opera House.
The couple were often seen out sight-seeing, during their short trip Down Under, accompanied by a massive security convoy.
During their visit they took a Sydney Harbour Bridge climb, and met with Austraian Prime Minister, Anthony Albanese.