Built in 1867 as the home of the Texas General Land Office, this building is the oldest standing government building in the state. Along with a listing on the National Register of Historic Places, it has quite a bit of history. From 1887 to 1982, a draftsman named William Sidney Porter, better known today as the short story author O. Henry, rented a space upstairs. Some of the author's greatest short stories were inspired by his experiences here. The second floor of the building houses the O. Henry Nook, where visitors can view his comical land tract maps. The building also houses the State Travel Information Center, which provides guided tours. A Texas-style gift shop is located on the first floor.