You can visit HAARP during their open house every August, now that it is managed by the University of Alaska - Fairbanks.
HAARP was built by the Office of Naval Warfare for two reasons:
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To see if they could detect submarines by using tomography enabled by heating a spot in the ionosphere and bouncing another signal off of that hot spot into the ocean, and
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To see if they could create a gigantic "dipole" in the sky that would resonate at the extremely long wavelength low frequencies needed to communicate with submarines
HAARP was turned over to UA-F in 2015 and has opened its doors.
Russia has one: https://en.wikipedia.org/wiki/Sura_Ionospheric_Heating_Facility
as does a consortium in Scandinavia:
https://en.wikipedia.org/wiki/EISCAT
None of these systems is capable of modifying the weather due to the emitted power being less than a single lightning bolt.
Source: Wikipedia