Alcatraz holds a very special place in the minds of the US public. It has a certain image that has been carefully fostered by Hollywood films and more recently, by tourists’ visits to the site. It has a popular-culture reputation as an island prison designed to hold the most infamous and notorious of the nation's criminals. In the mind's eye, thugs and hooligans sit behind stone walls and plot various schemes for escape. And while all of this is accurate to a certain degree, there is so much more to the history of Alcatraz than this two-dimensional image. Across the water and behind the walls, this prison held secrets that known only to those who lived and worked there, who spent days and weeks and years upon the stony piece of land known as “The Rock”.

These men—tasked with guarding other men who were deemed dangerous to society—grew to know Alcatraz in ways that no one else could. They saw how hardened criminals reacted to harsh living conditions. They devised ways to keep order among the most unruly elements of society. They utilized the environment as a barrier between the convicts and the public. Some of what they learned and experienced is detailed in the following list.

25 Tiny cells

Everyone knows that prison isn't supposed to provide a life of luxury for the people on the inside, but only they and the guards can really appreciate how little living space was provided for the inmates at Alcatraz. Fact Retriever reports that some of the cells were only five feet wide by nine feet long. To put that in perspective, it means that many of the men held there wouldn't be able to lie crossways in their cells without scrunching up, and this space also included a sink and toilet.

24 Guards and their families lived there

Alcatraz was not just home to people behind bars and guards. The families of the staff at Alcatraz also lived on the island, including their children. It only makes sense that there would be other people at the site besides just the inmates and the prison employees—after all, guards have families, too—but it is a detail that didn't receive attention from the public. Fact Retriever even notes that there is an organization for the kids who lived there that is called the Alcatraz Alumni Association.

23 Silence Is Golden

There were several rules and policies in place at Alcatraz that contributed to its reputation of being a harsh and strict facility. One of these was the rule that the people housed there couldn't talk to each other outside of very specific times. According to Loews Hotels, inmates could speak at mealtime and during recreation time, but during the rest of the day, they had to maintain silence. It seems this restriction was too much even for Alcatraz and the rule was changed in the 1930s.

22 Making The Grade

Guards at Alcatraz identified the different sections of the prison by alphabetic identifiers. American-Historama notes that A block was the area where the offices of the prison staff were to be found. Blocks B and C were the portions of Alcatraz that most people think about, the cells for the general inmate population. But D block is also infamous as being the home to the cells used for punishment. D block was where trouble-makers were put when the guards deemed that they were to experience solitary confinement.

21 Al Capone Jail house singer

Al Capone was a name known to the entire county. He was an early inmate of Alcatraz and is perhaps one of the facility's most infamous residents. But what outsiders aren't likely to know is that while he was housed here—after being transferred in from Atlanta—he actually played in the institution's house band. History notes that Capone played banjo in the group that performed regularly for the other inmates. They were known as the Rock Islanders and played on Sundays.

20 hidden escape attempts

A large part of the Alcatraz legend centers around the idea that the facility was impossible to escape, not the least of which because of the dangerous and chilly waters surrounding the island. This didn't mean, however, that escape attempts didn't take place. One such attempt, as reported by PBS, involved an attempt to deceive the guards. A pair of prisoners created fake heads out of cement, paint and hair that were placed on their cots as if they were still asleep in their cells.

19 short stints to straighten them out

The island prison had a reputation for housing big-name and infamous folks such as Al Capone and the Birdman of Alcatraz. But for most of the inmates, this was not the only penitentiary in which they spent time. Fact Retriever says that when prisoners caused problems at other facilities, many were sent to Alcatraz until they learned their lesson—usually about six, seven or eight years—and then returned back to their original home prisons to serve out the remainder of their sentence.

18 There were different levels of punishment

Alcatraz was sectioned into a number of different blocks, and D block was where the prisoners were put when they needed to be segregated or even put into solitary confinement. 36 of the cells in this part of Alcatraz were designated as segregation cells, and six of them were intended for what was considered to be one of the harshest punishments, being totally isolated from all other people. But according to American-Historama, D block was also where the library for the prison was located.

17 Be My Guest

The people housed at Alcatraz were not kept entirely separated from the rest of the world. They were allowed to have people come to see them, but these visits were very strictly regulated. Alcatraz History notes that the conversations between the inmates and the guests were prohibited to be about either news of the day in the outside world or about conditions within the prison facility. They communicated with each other through an intercom, and if rules were broken, the individual might have their visitation rights revoked.

16 Strange Doings Underground

Like many other islands in bays along the coasts of America, Alcatraz was at one point a fort designed to defend against attack by water from enemies in other nations. As time passed and priorities changed, the remote and isolated island was designated as a federal prison. But beneath the floors of the prison are the remains of this national fortification, according to the BBC, including tunnels that were probably intended to provide safe passage during times when the island might have been under fire.

15 A Fish Out Of Water

The guards at Alcatraz spent a good portion of their time moving prisoners from place to place, such as when an inmate might earn a punishment and be assigned to segregation or solitary confinement cell. American-Historama reports that newly arrived prisoners also had a special place assigned for them as when they first came to Alcatraz. They were placed in cells that were on the ground-floor level, cells that were nicknamed “the flats” and were in a section known as “Fish Row.”

14 Getting Into Hot Water

Despite its reputation for being one of the country's tougher facilities, those incarcerated at Alcatraz enjoyed a luxury not often granted to inmates in the federal system. According to Wired, the prisoners here actually got to have hot showers, instead of being limited strictly to cold water. The reasoning was that if they were used to the hot water, it would be that much harder for them to brave the frigid water surrounding the island if they were to attempt to escape by swimming to the mainland.

13 Bad Reputation

Alcatraz had a reputation for imposing strict living conditions upon those housed there—meant to be a fitting punishment for the most notorious offenders in the nation. But as with most reputations, the reality of the situation didn't live up to the full image that was presented to the public at large. According to Exemplore, prisoners who didn't cause problems for the guards were not treated harshly, and some even were allowed to work in the homes of the prison staff or to provide care for their children.

12 Time Out

Different parts of Alcatraz were designated for different uses, such as the kitchen area and the staff and employee housing. One of the sections was primarily used for staff offices and to store various supplies needed for the operation of the facility. But this office and storage space at times did double-duty, according to American-Historama. Sometimes the inmates needed to be separated from the rest of the prison population, and these areas were used to provide a space where they could be held isolated from the other prisoners.

11 The Great Expansion

To the outside world, Alcatraz appeared to be a collection of jail cells set atop a desolate island. To the guards, however, it was much more complicated than what it seemed. As of 1921, according to Fact Retriever, the federal prison added a hospital and a mess hall, as well as other buildings, to the facility, in addition to more cells to house the prisoners. All in all, the Alcatraz that the guards knew was actually the largest concrete building in the world for that time.

10 Look But Don't Touch

Alcatraz Island is desolate but by no means lifeless. Birds and animals live there as well as several types of plants. According to This Boundless World, one plant in particular that grows on Alcatraz is the agave. But this flora is much more than just an attractive feature to the area. These plants also have sharp points that make them a detriment to anyone trying to pass through them, which helped the guards to deter those being housed there from attempting an escape.

9 The Old Ball And Chain

Alcatraz was supposed to be a place that inmates feared. It was supposed to be a harsh punishment for the prisoners who were the at the top of the list among the nation's offenders. Exemplore reports that features and attributes that were added to Alcatraz in order to enhance its ominous reputation included building extra guard towers and using metal for the bars that was specially hardened against being cut. For those who misbehaved, the guards also used the famous punishment of chaining a heavy metal ball to their ankle.

8 Never at full capacity

Guards at Alcatraz had the job of keeping watch on prisoners who were deemed some of the most hardened in the county. They had to maintain a close watch and know how many inmates they were responsible for at all times, so they had to be very aware of the exact population of the facility at all times. According to Gray Line of San Francisco, Alcatraz never was packed to full capacity and the most prisoners ever held there at one time was 320 people.

7 Green Thumbs

Although Alcatraz was nicknamed “The Rock,” it wasn't just barren and stony ground. Many of the residents of the island—not only the inmates but also the prison guards and members of their families—took up the hobby of gardening. Fact Retriever reports that the plants kept growing long after the island ceased operation as a federal facility. In fact, the flora of Alcatraz has since been tended and taken care of in a display to honor the impact that gardening can have.

6 Running Up A Bill

Although Alcatraz served its purpose as a prison for housing the most notorious of offenders, the facility was eventually closed. Salaries of the guards were far from the only costs involved with the running of the facility. Alcatraz History says that this island institution was the most expensive to run of any prison in the country. The infrastructure of Alcatraz was also in need of repair, and it was decided that it wasn't worth the cost to keep it functioning as a prison.