The choice and timely provision of the necessary conference and exhibition venues are a key success factor of an event. This process, however, is neither self-explanatory nor as simple and simple as it may seem. This is because the selection areas have to meet many and often conflicting criteria: they are functional and sufficient in capacity, but without making the conference seem small, allow maximum exploitation – technically and economically – without the cost To them to skyrocket. And last but not least, their closure should be timely, excluding unpleasant surprises and last minute “despair” solutions.