Tucked in the southeastern part of Edinburgh’s St Giles’ Cathedral is a small chapel brimming with spectacular woodwork. Eagle-eyed visitors will spot three distinctly Scottish heavenly beings hiding among the architectural details.

The Thistle Chapel, a gorgeous neo-Gothic structure, was constructed in 1911. Architect Robert Lorimer designed the space, which serves as the home to the Order of the Thistle, Scotland’s chivalry order.

Each of the 16 Order members is appointed by the Queen, and new members are only initiated once a current member has died. When a new knight is installed, the current members don their velvet green robes and white-plumed hats for a ceremony in the Thistle Chapel.

The knights’ stalls line the sides of the chapel. The coat of arms of knights past and present line the walls, and the ornate canopies atop the stalls are crowned with the crests of the still-living members of the Order.

Their symbols aren’t the only ones to adorn the space. Intricate details are carved into the dark wood, illuminated by the light that spills in through the stained-glass windows. Look around, and you’ll spot flowers and animals sculpted into the beams. There are figures carved into the high ceiling, including a pelican, an old Roman symbol for Christianity.

Hiding among these images of the natural world are three angels playing bagpipes. Two of the angels, one above the top right corner of the door, the other tucked in the corner across from the entrance, blend in with the surrounding woodwork. The third angel is made of stone and overlooks one of the windows. These three musical beings are such beloved details of the chapel, they even inspired the name of a restaurant across the street.