Located in Prince Georges County, Maryland, this sprawling hospital has been abandoned for over 30 years. While it was once one of the state’s most important medical institutions, it’s currently deserted and turning to dust in a very spooky way.

Glenn Dale Hospital was a tuberculosis sanatorium built in 1934.

Flickr/Jack Parrott

It also served as an isolation hospital, sheltering those with dangerously contagious diseases.

Flickr / Jack Parrott

The complex is huge, covering more than 200 acres and including 23 buildings.

Flickr/Jack Parrott

The decaying hospital includes art rooms, chapels, morgues, playgrounds and staff housing.

Flickr/Jack Parrott

The creepiest part? A vast underground tunnel system runs between the buildings.

Flickr/Jack Parrott

These tunnels were mainly used to travel between the children’s and adults’ buildings.

Flickr/Jack Parrott

However, there are rumors that some led to rooms where particularly unstable patients were kept.

Flickr/Studio Tempura

If those tunnels or rooms exist, they’ve never been found.

Flickr/Jack Parrott

Today, overgrown vines and rust blanket the silent hallways and wards.

Flickr/Jack Parrott

In 1994, Maryland enacted a law requiring the grounds be turned into a continuing care facility for the elderly if the hospital is ever sold.

Flickr/Jack Parrott

In the meantime, preservation groups are campaigning to have the hospital listed on the National Register of Historic Places.

Flickr/Jack Parrott

Whatever the future has in store for Glenn State Hospital, the memories of former patients and staff will live on for years.

Flickr/Jack Parrott

Flickr / Jack Parrott

Flickr/Studio Tempura

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