The Library Park Historic District in Las Vegas, New Mexico, was listed on the National Register of Historic Places in 1979. The listing included 21 contributing buildings and a contributing structure on .

It includes a Carnegie library, the Carnegie Public Library of Las Vegas, which is a cross-plan red brick Classical Revival building with a center dome and a porticoed entrance, designed by architects Isaac H. Rapp and William M. Rapp. With

It includes the Immaculate Conception Church (1949), at the southwest corner of the library park, a creme brick Latin cross plan Gothic Revival-style church which was designed by Les J. Wolmagood.

It includes the parish house next door to the church, at 811 6th Street, which is a stuccoed frame house.

It includes 807 N. National, a small gable-front stucco house.

It includes a Gothic cottage at the southwest corner of 6th and National, dating probably to around 1880.

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