I have only been able to catch 2 episodes of Legend Quest. It is a well choreographed and edited show and makes a good travelogue with gorgeous scenery and a good history lecture of ancient legends. But I have a problem with the conclusions at the end.
I was really upset when the host theorized that the spearhead that pierced Christ was secreted in Area 51. Though not admitted publicly, the spearhead recovered by General Patton was stored in the Fort Knox Gold Repository. The crown of King Stephan of Hungary was stored there as well but was better publicized, especially when President Carter decided to give it back to Hungary while the country was still under communist rule (which upset my Hungarian born wife to no end as she was afraid the communists would destroy it). It is logical to assume that many historical artifacts are stored at Fort Knox other than just tons of gold bullion. But don't try to sneak in there to look for it. You won't make more than 10 yards inside the fence before becoming history yourself.
Another episode was on the Stone of Divinity (or something like that). The search and scenery were well presented but heavily edited. The scene of finding what appears to be the stone was strictly dramatics. The flooring with the trap door is less than 20 years old (no mildew or dry rot on the beams) so the caretakers of the Castle on Iona have known a black monolith of some sort has been down there a long time.
Perhaps the best looking part of the show is Kinga Phillips. Though her biography shows her as being born in Poland, the name Kinga is Hungarian. That's the same name as my wife's Hungarian sister, and one of our nieces by her brother. She is a professional actress and not an archaeologist but works well with the host as well as being eye appealing.
So, if the endings and findings were done more realistically (such as the Iona custodian telling them there's a big black rock in that small room under a trap door), I wouldn't groan so much.
And as for Groom Lake Air Force Base (science-fictionally called Area 51), give me a break. You can see every building on Google Earth and read the runway markings. At best I think it's a decoy to keep UFO hunters busy and security personnel and procedures trained and practiced for real secret bases.
Yet I still like the show but mostly for entertainment rather than historical accuracy.