In this episode of Moms to Mums, we follow a pair of Ray-Bans down a rabbit hole and wind up deep in the world of UK taxes, city planning, and ancient ruins. We break down the differences between VAT and U.S. sales tax, and the relative simplicity of the UK’s tax system. And we take a neighborhood tour through the City of London and the Barbican, exploring everything from brutalist architecture to buried Roman temples—because in the UK, history is always just beneath the surface. And don’t miss this week’s Vocab Roulette, where we untangle the mystery of braces, suspenders, and Kirby grips.