A visit to a memorial place can prompt reflection, but a personal impression is only one part of its story. A careful account distinguishes the experience of visiting from documented information about the place and the people it concerns.
Begin with a plain description of what you observed. Note the setting, the route through the space and any publicly presented wording you intend to discuss. Check the source and context before expanding those observations into a historical claim.
Keep the tone proportionate to the subject. The purpose of a personal essay need not be to speak for everyone connected with the place. Explain your own viewpoint and recognise what your visit could not establish.
A quiet ending may be more appropriate than a dramatic conclusion. The piece can leave a reader with a well-supported question, a clearly attributed source or a precise observation. Careful limits allow reflection and historical enquiry to sit alongside each other.