The user wants translation to Japanese, only the translation, nothing else. Provide Japanese translation. Ensure no extra text. Provide the translation accurately. Original text: "The oldest bar in the world is in Ireland. Archeological records have found that the walls of Sean's Bar have been around, and serving, since 900 AD. Further, there are records of every owner of the pub back to its 10th century founding. It opened over 1100 years ago." Translate: "世界で最も古いバーはアイルランドにあります。考古学的記録によれば、ショーンズ・バーの壁は紀元900年から存在し、営業していたことが分かっています。さらに、10世紀の創業以来のすべての所有者の記録が残っています。開店から1100年以上が経ちます。" Check nuance: "Sean's Bar" maybe keep as "シーンズ・バー" or "ショーンズ・バー". Use "シーンズ・バー". Provide translation. Let's produce final.

We need to translate visible text, preserve HTML tags exactly. Ensure HTML entities like ’ remain? Those are part of visible text: the apostrophe. Should we keep them as is? The visible text is "Sean’s Bar, the World’s Oldest Watering Hole". The entity will be rendered as ’. We can keep the entity unchanged or replace with actual Japanese punctuation? Probably keep entity as is? The instruction: preserve all HTML tags exactly — only translate visible text content. Entities are part of text; we can translate them but keep entities? Usually we translate the characters, not the numeric entity. So we should replace the entity with Japanese apostrophe? Not needed. Could just keep as ’ after conversion. Might keep the entity as is, but that is not translation. However the visible text includes the apostrophe character, which is fine. We'll output Japanese text with same tags. Proceed paragraph by paragraph.

Sean’s Bar, the World’s Oldest Watering Hole

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ショーンのバー、世界最古の飲み屋

A frosty pint is something special at Sean’s Bar in the central Ireland town of Athlone. The iconic public house