The deepest river gorge in the North American Continent is Idaho's Hells Canyon - 7,900 feet deep. Yes, it's deeper than the Grand Canyon.
Shoshone Falls (212 feet), near Twin Falls, Idaho, drops 52 feet further than Niagara Falls.
The Frank Church River of No Return Wilderness is the largest wilderness area in the 48 contiguous states - 2.3 million acres of rugged, unspoiled back country.
Salmon River, known as the "River of No Return" because of its difficult passage, is the nation's longest free-flowing river that heads and flows within a single state.
63% of Idaho is public land managed by the federal government.
Nearly 85 percent of all the commercial trout sold in the United States is produced in the Hagerman Valley near Twin Falls.
Idaho grows about 27 billion potatoes annually. .
The world's first nuclear power plant is located at the Idaho National Environmental and Engineering Laboratory (INEEL), near Arco, Idaho.
The Atomic Energy Commission offered the town of Arco electricity generated by atomic energy in 1953.
In 1953, the engineering prototype of the first nuclear submarine, the Nautilus, was built and tested in the Idaho desert on the Snake River Plain near Arco
Did you know that Idaho has a seaport? The Port of Lewiston allows the exportation of millions of bushels of grain down the Snake and Columbia Rivers for overseas shipment.
Rigby is known as the birthplace of television since it is Philo T. Farnsworth's hometown. Farnsworth pioneered television technology .
The world's first alpine skiing chairlift was (and still is) located in Sun Valley. Built by Union Pacific Railroad engineers, it was designed after a banana-boat loading device. The 1936 fee: 25 cents per ride.
In Idaho, its against the law for anyone over the age of 88 to ride a motorcycle.
A person may not be seen in public without a smile on their face in Pocatello,
Idaho In Boise, Residents may not fish from a giraffe's back.
You may not fish on a camel's back in Idaho.
In Idaho, riding a merry-go-round on Sundays is considered a crime.
Anti-delinquency statutes in Idaho prohibit juveniles from deliberately stepping on ants
In Idaho law forbids a citizen to give another citizen a box of candy that weighs more than 50 pounds.
In Pocatello, a law passed in 1912 provided that "The carrying of concealed weapons is forbidden, unless some are exhibited to public view.
It's safe to make love while parked in Coeur d'Alene, Idaho. Police officers aren't allowed to walk up and knock on the window. Any suspicious officer who thinks that sex is taking place must drive up from behind, honk his horn three times and wait proximately two minutes before getting out of his car to investigate
Wilson Butte Cave, near Twin Falls, was excavated in 1959 and found to contain bones of bison and antelope, as well as some arrowheads and other artifacts that were carbon-dated to be 14,500 years old. This makes them "among the oldest definitely dated artifacts in the New World."
Julia Jean Mildred Frances Turner was burn in Wallace, Idaho and changed her name to Lana Turner, becoming a famous movie star!
Ernest Hemingway arrived in Sun Valley in 1939 to work on his novel, For Whom the Bell Tolls. Idaho offered wide open spaces for Hemingway to indulge in his passions for hunting, skiing, fishing, and other outdoor activities. Hemingway is buried in Ketchum, Idaho where he died on July 2, 1961.
Sacajawea, a Lemhi Shoshoni from an area now on the Montana/Idaho border, escorted Meriwether Lewis and William Clark through northern Idaho to the mouth of the Columbia River drainage.Today, Highway 12 follows the old Lewis and Clark Trail along the Lochsa (pronounced lock-saw) and Clearwater Rivers until they merge with the Snake and continue their journey to the Pacific Ocean.
Between 1863 (when Abraham Lincoln signed the bill making Idaho a Territory) and statehood (27 years later), the Idaho Territory had 16 governors, four who never set foot in Idaho.
Appropriately named the "Gem State," Idaho produces 72 types of precious and semi-precious stones, some of which can be found nowhere else in the world. The Silver Valley in northern Idaho has produced more than $4 billion in precious metals since 1884, making the area one of the top 10 mining districts in the world.
One of the largest diamonds ever found in the United States, nearly 20 carats, was discovered near McCall, Idaho.
There are some more I will list latter.
Idaho had the distinction of the first and only fatalities in a Nuclear accident when a containment vessel at INEL was being maintained in the 50s and the top blew off killing 3 or 4 engineers I think
Boyd Codditing (car builder fame) was born in or around Burly Idaho
Hagerman has a fossilized horse the stands only 4ft tall and was on display at the Smithsonian for years and other stupid stuff from here