The Crypt space, which has only just opened at One Mayfair, was transformed into a gothic lair by Event Concept.
More than 350 guests were greeted by a selection of Off to Work staff standing behind a church pew handing out mini Clings - which are Post-it Note-styled sheets that can be stuck by static to any wall - for them to leave birthday messages on around the venue's walls.
They then headed into the party passing 15 of Event's best covers before enjoying canapés and drinks courtesy of Create.
In each of the event spaces impressive arches, Event Concept had different visitors experiences that included Photobooth Out of Order creating a Sleepy Hollow-styled photo set for guests, Temple and Shian's liquid nitrogen desserts and acts from Sternberg Clarke such as Wandering Hands, a tarot reader and a magician.
Did you make it to the party? What were your highlights? Let us know by commenting below.
A double page spread of the party will be in the November/December issue of Event, which can be obtained by subscribing here.