In place of the United Nations:

A public reception center for monitoring ambient electronic signals from around the globe. Open to everyone. Makes possible real-time monitoring of planet communications (electro-magnetic).

Some hardware:

A spheroid construction of closely-packed 24-inch video monitors. Sphere to be 50 feet in diameter. Moving, spiral sidewalk surrounding it. Hundreds of ear phones for monitoring and mixing audio signals from video monitors. System monitors video transmissions from around the planet, including CATV.

System for monitoring planet radio and computer transmissions, including military, civilian and HAM operations. Accessible to 500 persons simultaneously. Possibilities for mixing signals on premises in real-time. Instant planet art.

Eventual monitoring, in same installation, of world phone system. Elimination of privacy, secrets. Also, elimination of phone system.