Grandiose exhibition halls, intricately carved stone walls, vaulted ceilings, stained glass windows, ornate chandeliers, lavish furnishings, rich velvet drapes, mysterious ambiance, dramatic lighting, foggy atmosphere, eerie shadows, grand staircases, intricate wooden paneling, Gothic arches, ribbed vaults, flying buttresses, pointed towers, mystical symbols, ancient artifacts, mysterious relics, dimly lit corridors, narrow walkways, grand entrance halls, imposing stone statues, mystical frescoes, ornate metalwork, lavish decorations, Baroque-inspired details, mysterious alcoves, secret chambers.