The Crusader castle diary of Useless
Useless is the network’s eraser-in-residence. This time it has been posted to the top of a round tower with a notebook and a very small telescope. Every fact in here has been checked by someone more qualified, i.e. anyone.

- Day 1
Crac’s sloping glacis was so big it was called the Mountain. My heap of pencil shavings is called the Mountain too. Nobody wants to climb it either. ICOMOS evaluation for UNESCO: Crac des Chevaliers and Qal’at Salah El-Din (2006)
- Day 2
Loops were narrow openings for shooting at an enemy. My pencil case has a narrow opening too. It is for losing pens. ICOMOS evaluation for UNESCO: Crac des Chevaliers and Qal’at Salah El-Din (2006)
- Day 3
Crac des Chevaliers means Crac of the Knights. Useless des Erasers means… still Useless. ICOMOS evaluation for UNESCO: Crac des Chevaliers and Qal’at Salah El-Din (2006)
- Day 4
Acre’s Hospitallers had a vaulted toilet room 10 metres tall, with rows of eight seats. Ten metres! I would need a ladder to reach the light switch. Old Akko & Nazareth Development Company: The Knights Halls
- Day 5
A sewer 1.5 metres tall ran right across Acre to the sea. I am an eraser, not a plumber. Next note, please. Old Akko & Nazareth Development Company: The Knights Halls
- Day 6
The Order’s symbol is a white eight-pointed cross. I am a block with eight corners. Nobody has ever made me a badge. Museum of the Order of St John: History of the Order
- Day 7
Saladin and Richard the Lionheart were enemies, yet Saladin sent doctors when Richard was ill. When I was ill, the pencil sent nothing. Not even a doodle. Old Akko & Nazareth Development Company: Timeline
- Day 8
The wall round medieval Rhodes is 4 kilometres long. I once rubbed out a line 4 centimetres long. I needed a lie-down. UNESCO World Heritage Centre: Medieval City of Rhodes
- Day 9
Each of the Order’s seven “tongues” had its own inn. Seven tongues, and not one of them ever said thank you to an eraser. UNESCO World Heritage Centre: Medieval City of Rhodes
- Day 10
Fort St Angelo took 69 direct hits in the Second World War and is still standing. One ruler fell on me and I lost a corner. Heritage Malta: Fort St Angelo
- Day 11
Next to Kolossi castle are the ruins of a 14th-century sugar mill. If I were a knight, that is where you would find me. Deputy Ministry of Tourism, Cyprus: Kolossi Medieval Castle
- Day 12
Karak Castle is called a dark maze of stone-vaulted halls and endless passages. That is also how I describe the back of the classroom cupboard. Jordan Tourism Board: Karak
- Day 13
The Round Church in London was designed to recall a round church in Jerusalem. I am designed to recall where you left your homework. I usually don’t. The Temple Church: History
- Day 14
Probably no more than two knights lived at Temple Manor all the time. Two knights, one big hall. Imagine the echo. English Heritage: History of Temple Manor
- Day 15
Saladin’s castle is a narrow triangle 720 metres long. I am a rectangle 4 centimetres long. We are both very proud of our shapes. ICOMOS evaluation for UNESCO: Crac des Chevaliers and Qal’at Salah El-Din (2006)
- Day 16
The Hospitallers began by running a hospital for pilgrims who fell ill. I began by rubbing out a smiley face. Everybody starts somewhere. Museum of the Order of St John: History of the Order
Want more of Useless on paper? The Crusader Castles Family Activity Pack has colouring pages, a castle maze, spot the difference, a design-your-own-castle page, Useless the Eraser’s Crusader castle jokes and a 20-question quiz to do together (paid download, $3.49 USD, A4 and US Letter).