We’d like to thank you for taking us around Radio Beijing.

我们要感谢您带我你们参观北京广播电台.
这里的around是遍及、围绕、环绕的意思,因为参观的话,总要里里外外、上上下下转一圈.
show/take sb round/around some place 是“带领某人参观某处”的意思.其他例句：
He has been all around India. 他走遍了印度.
Go for a run around the block. 绕着街区跑一圈.