Busted rail lines, melting roads, liquified tarmacs—infrastructure in more temperate climes isn’t built for the extreme heat of climate change, and it’s showing.

It’s hot right now in Europe. Historically hot. 

It’s so hot, that in the UK—where temperatures exceeded 40 degrees C (104 degrees F) for the first time in the country’s history on July 19—officials have resorted to various stop-gap measures to keep overheated infrastructure from giving out. 

It’s so hot there are local travel advisories—warning folks to stay put, do their best to stay cool, and put the brakes on traveling. And more heat waves across the Northern Hemisphere are potentially on the way.

Data isn’t in yet on how exactly the summer’s heat waves are impacting tourism at popular travel destinations, but past scorching summers have shown that extreme heat suppresses the number of visitors to traditional hot beach vacation destinations, as well as changing who comes and when. It also impacts how we travel (or just plain get around).