Overtourism is rattling cities across Europe, where some activists blame short-term rental companies like Airbnb for the rising cost of living.

Protests may be returning this summer, but so are new ideas to make travel more sustainable, from smart tech to visitor taxes and travel rewards.

CNN reports that the strike abruptly took place during a routine meeting. Gallery attendants, ticket agents and security refused to work in protest over uncontrollable crowds, understaffing and what was referred to by a union as an “untenable” working environment. No additional details were revealed.

Protesters used water pistols against unsuspecting tourists in Barcelona and on the Spanish island of Mallorca on Sunday as demonstrators marched to demand a rethink of an economic model they believe is fueling a housing crunch and erasing the character of their hometowns.

Yesterday in Paris, the world’s most popular museum, the Louvre, had to shut down due to a work stoppage by employees. The museum’s staff said they were protesting work conditions at the museum. The main complaint: They’re overwhelmed by the number of visitors.

The Louvre strike, though sudden, was not without cause. Workers described 'untenable' conditions worsened by overcrowding, chronic understaffing, and crumbling infrastructure. With nearly 8.7 million visitors last year—more than double what its current systems were designed to handle—the Louvre has become emblematic of cultural landmarks pushed to their limits.

In Venice, a couple of dozen protesters unfurled a banner Sunday calling for a halt to new hotel beds in the lagoon city in front of two recently completed structures, one in the popular tourist destination’s historic center where activists say the last resident,

President Donald Trump left the G-7 meeting in Canada a day early. Officials reversed guidance exempting some workplaces from immigration raids. Russia carried out a massive overnight attack on Kyiv.