Backed by high-power lobbying and public relations firms, the prince is seeking to rebrand Saudi Arabia as a modernist oasis.
He even got to see the inside of Apple's new $5 billion campus, Apple Park, which Apple CEO Tim Cook said earlier this year won't be allowing tours for Apple fans because there is "so much confidential stuff around".
Saudi Prince's world trip also includes a coast-to-coast tour of the United States, Britain and Egypt, where he wooed multi-million dollar deals, ranging from defense to entertainment.
The prince has used his global tour to project his reforms - including the historic lifting of a ban on women driving, cinemas and mixed-gender concerts - as part of his pledge to return the kingdom to moderate Islam.
Asked whether France might consider following Germany's recent decision to end arms sales to Saudi Arabia, an Elysee source last week said French arms sales were subject to strict case-by-case approval procedures which considered concerns for civilians.
Saudi Crown Prince Mohammed Bin Salman meets US President Donald Trump, Vice President Mike Pence in Oval Office.
Almost 10,000 people have been killed since the coalition joined the Yemen war in 2015, triggering what the United Nations has called the world's largest humanitarian crisis.
Amid the flurry of announcements in France, campaigners were also mobilised to keep attention focused on French weapons exports to Saudi Arabia and rights abuses in the country.
Ahead of prince Mohammed's trip to France, Saudi officials suggested relations were strong between him and Macron, both young leaders with reformist agendas.
Amnesty International also took out a full-page advertisement in the Liberation newspaper on Monday, featuring the feet of an executed prisoner, urging Macron to talk about human rights with Prince Mohammed. Macron is only eight years older than the prince.
Spain's defence minister, Maria Dolores Cospedal greeted Prince Mohammed bin Salman, who serves as defence minister and also controls economic policy for the world's top oil exporter, at a military air base at Torrejon de Ardoz near Madrid, according to an AFPTV reporter at the scene.