MUST DO: 30 Euston Square

This is a landmark building that you probably never even knew existed. Built for an assurance company in 1906 in the Greek Revival style, it was converted to form the headquarters of the Royal College of General Practitioners in 2012 after lying unused for a good couple of decades.

It’s utterly gasp-inducing as you step inside the elegant grade II-listed reception, where the bright white, calming Caritas Café lies beyond (licensed, we may add, if you fancy a glass of vino with your salad or sandwich).

There’s also a private-hire roof terrace which offers unexpectedly awesome views northwest, plus meeting spaces, a boutique hotel and vertigo-inducing view right back down to the open atrium.