In what follows, I argue for the need to include responsibility and matters of care as primary dimensions of spatial practices in order to approach architectures of encounter, attention and care: perhaps the architectures of a constituent museum. Responsible practices need to contribute to increasing the sheer amount of care and love in/on the planet: non-cynical love and care are our tools, energies and intensities to resist cynicism and toxic irresponsibility. Combining what I call dwelling and performative perspectives, I try to think of ‘care’ as a doing, as a situated ethics and as a politics of architecture, to explore the fragile power of the anarchic share: an active listening, a generous gifting, an open encounter based on accepting that we are not a single beings, and carefully enduring the waiting of becoming-with others in/through an ‘amphibian’, constituting practice.@en