Mine???? Which every mountain is in my sight. Be them in Colorado, North Carolina, Alaska, Whistler, Banff, Utah, Oregon or Hawaii.

Give me a mountain I am happy .... put it close to a beach crazy happy.

lke yes, we have no mountains in Mississippi. I was once told Houston was in the mountains of Mississippi.

What is your favourite river?

Not in the same league as the Canadian Rockies or the Alaska range, but the Olympics and Cascades have a great advantage in that they're close to great coastal and urban areas too, so offer a vacation with the potential for great variety.

I have to add in a vote for the Rocky Mountains in Banff/Jasper. I can see them from my office window and even though they are 80 miles away, they are still stunning. Lots of snow up there. When we were in Charlotte NC last year I mentioned to someone that our mountains don't have trees on the tops. She said that she was sorry for us. I said it's okay that's the way they're supposed to be. LOL!

I was born in Colorado and am partial ro the mountains there. When I married and lived in Michigan for a year, it was awful to look west and they weren't there!

Have lived in California for many years now and the Sierras are glorious.

I have to agree with KarinNp that I love whatever mountains are in my view. Each has its own beauty from Colorado, Wyoming, California, Alaska, Hawaii, at least in my experience.

1. Alaska
2. Canadian Rockies
3. Grand Teton
4. Colorado

As all opinions go, to each there own. I for one love the mt's in montana, the bitteroots from waist deep in the river, the Crazy moutains from a ski lift at bridger bowl, plus GNP from a canoe on flathead lake.

I also like grand tetons and the mt's of Colorado, but montana is my favorite.

The Grand Tetons, seen from the National Elk Preserve. If the lighting is right...oooooooh.

Mid-June can be iffy weather at high altitudes. Not that I'm saying it's a bad time to visit, just bring layers and weatherproof outer gear. We've had snow on July 4th in the Rockies.
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For June - I think I'd go for the Appalacian Mountain range. I went camping there in May a number of years ago (a tad cold - swimming in those creeks will certainly wake you up)... Otherwise, I agree with everything everyone else said - but to be honest, you're in the mountains, you see trees - they're all gorgeous - how can you go wrong????

Oh boy this could go on for days!!
I cannot comment on Alaska because of total ignorance of the various ranges, particularly the one that contains Denali.

I think it depends on what you want to do with these peaks. If you want to climb one, Ranier is the biggest challenge. You don't hear of many people ascending Ranier without training and snow-ice climbing experience and equipment.

For non technical hikes up to 14,000 feet and beyond, there are several peaks in Colorado that can be done by a fit person. I have done two of them: Mt. Harvard and the Mount of the Holy Cross.

Yale, Columbia, and Massive are also steep uphill scrambles that can be done without technical skills. Long's Peak is similar but is is arduous.

I have not done Uncompahgre or Windom in the San Juans, but that range, too, has has quite a few outstanding summits, such as El Diente and Wilson Peak and Mt. Wilson.

Around Telluride and Ouray there are peaks less than 14,0000 feet that are also quite beautiful, with Sneffels being one that can be climbed by amateurs.

The Maroon Bells and Capitol Peak around Aspen are difficult enough to require technical skills. I would never have tried the Bells.

As for the Tetons, they are so steep that even the "shorter" ones present a technical challenge. The Grand Teton itself is one that probably demands not only rope skills, but also some specialized training in high altitude climbing.

The Sierra Nevada range of course offers endless opportunities. One could a week every summer for 20 years and not cover all the ground.
The trouble with so many of the inner secrets of the Sierra is that they are so remote that backpacking is required to get there.

So I think all of them have their merits and there is beauty to be found everywhere.