The properties of the observed 125 GeV scalar suggest that, if an extended scalar sector exists, it is likely realised near the alignment limit in which one of the Higgs mass eigenstates aligns with the direction of the scalar field vacuum expectation values, and its couplings approach those of the Standard Model Higgs boson. Results of recent ATLAS searches for heavy (pseudo)scalar resonances decaying to either a top quark pair or lighter scalars are presented.

