It looks like they're bringing back world wonders in Tropico 7. It also looks likely want to use different ones than we're in Tropico 6. I have an idea for a few they could include.

The Hollywood sign: increases the effectiveness of movie theaters and TV stations.

The Chrysler building: increases the speed of all road vehicles.

The Burj khalifa: reduces construction costs.

The pyramid of Tenochtitlan: removes the cost or negative consequences of having people killed.

The Sydney Opera House: increase the effectiveness of radio stations and music venues.