The big island is bigger than all the other islands combined. It is also less crowded than Oahu, Maui and Kaui. It has two distinct sides of the island. The Kona side is arid with lava rock and beautiful beaches. Hapuna beech used to be rated a top ten beach in the world. I saw a whale there in January. It is less crowded and great place to relax. The Hilo side is tropical forest like and has botanic gardens, waterfalls, farms, ranches and beautiful beaches.
The two sides are dissected by two mountains. Moana Kea is a dormant volcano with a international observatory at the top (13000+ sf) with 15 state of the art telescopes from many countries. You need a parka up there. The visitor center is at 9000 sf and you are above the clouds. They have a presentation every night at the visitor center and you can more stars than I can accurately describe how many you can see. You can see the milky way and many constellations and planets depending on the time of year. They will also point out the hubble telescope going across the sky. It is very interesting to see how the Hawaiians and other navigated the seas based on these constellations.
The other mountain is an active volcano in a national park with many trails and site like lava tubes you can walk through. When I was there is July I filmed the volcano erupting.
On the south of the island they have one of the several black sand beaches and one of the only green sand beaches in the world. The green sand beach is off the road (really off road as you have to travel what looks like a motocross track for 3 miles and then climb down and back up a cliff to see the green sand beach.
It will take a full week to see the entire island if you are organized. I have not mentioned the Mauna Lani golf course with a immaculate course and real ocean views through much of it. I wish my yard looked like their roughs. One of my sons friends played barefoot and beat us all. There is also my favorite spot on earth. The Lava Lava Beach Club where you sit at a table on the beach have MAI tais and watch the sun set.
I like Oahu and Maui, I just like the less crowding here. It is only crowded in Kona and Hilo.
View attachment 103438