A "pillarless ballroom" is a large room used for dancing and events that does not have any pillars or columns blocking the space. It means that people can move around freely without any obstructions in their way. Full definition
Mantra Legends Hotel offers conference organisers a variety of flexible meting rooms including a large pillarless ballroom with attached outdoor terrace and smaller executive boardrooms. (queenslandhotelconferences.com)
This conference venue features a large pillarless ballroom with «drive in access» and a selection of smaller rooms, some with natural light, that are well suited to workshops, breakout sessions, board meetings. (sydneyhotelconferences.com)
Our hotel has over 1,900 square metres of flexible venue space and a grand 1,100 square metre pillarless ballroom. (langhamhotels.com)