I agree with Bird about the Buckhorn museum in San Antonio, we were there about a month ago and it's pretty interesting.
For those who don't know the history. The first time I ever saw the Buckhorn was in 1962 at the Lone Star Brewery in San Antonio. They said the old Buckhorn Saloon had been in downtown San Antonio and they had moved the ornate cherry wood bar, mirrors, etc. to the brewery. The brewery had tours at certain times, and of course, the bar was normally open and you could get a couple of free glasses of beer. I think the head man at the Lone Star Brewery had travelled more and shot more animals than Eddie Walker.

So adjoining the "saloon" was the museum, known as the "Hall of Horns". They had separate rooms for the Asian Hall, African Hall, etc. And everything was free. I was there again in 1963 when I was 23 and a 20 year old cousin was with me. The bar tender asked me if I'd like a beer and I answered in the affirmative. Without missing a beat, he turned to my cousin and asked, "And would you like a root beer, sir?" Cousin was later grumbing about it, and I told him I thought it was real nice of them to have free root beer for the kiddies.
Then in 1967, my wife and I were back down there and they had added a "Hall of Fins" with mounted fish from around the world. I don't remember just when the Lone Star Brewery closed, but I had wondered what happened to the bar and all the mounted animals and such. So we were in San Antonio for our anniversary 3 years ago, visited the Alamo and river walk again, went to Sea World, and found the Buckhorn. Of course going into the bar and restaurant (where the picture I posted before was taken) is free unless you order food or drink, but there was an admission charge to go through the rest of the museum.