Security document and/or document of value containing a visually changeable window with a hologram

A hot laminated document of security and/or value, comprising at least one window, the window being formed from a multilayer assembly, wherein the multilayer assembly consists of

• a layer (P) comprising at least one photopolymer prepared from a photopolymer formulation comprising a polyol component, a polyisocyanate component, a writing monomer and a photoinitiator and incorporating at least one volume hologram (H) and
• a transparent, optically switchable layer (O) which becomes non-transparent by means of heat or irradiation, wherein the transparent, optically switchable layer (O) is a layer of at least of at least one transparent thermoplastic polyurethane comprising at least one photochromic or thermochromic material or composition,
• a transparent thermoplastic polyurethane film (K), which is located on the side of the layer (P) that is remote from the layer (O), and optionally a further transparent thermoplastic polyurethane film (K), which is located on the side of the layer (O) that is remote from the layer (P),
• two transparent outer layers (D),
• and a white core layer (W) having a recess, and wherein the multilayer assembly is disposed within the recess, and
• wherein the window is incorporated in the document of security and/or value in such a way that the remaining inner part of the document and the window are located between the two transparent outer layers (D) which comprise at least one thermoplastic and which two-dimensionally each cover the entire document.