Here are a few options for the description of a WordPress `post_tag` with the title “函館景點” in Traditional Chinese, varying in length and detail:

**Option 1: Short & Sweet**

> 探索函館必去的景點！包含函館山夜景、五稜郭、金森倉庫等，讓您玩得盡興。

**(Translation: Explore the must-see attractions in Hakodate! Including the Hakodate Mountain night view, Goryokaku Fort, Kanemori Red Brick Warehouse, et cetera, so you can have a great time.)**

**Option 2: Slightly More Detailed**

> 函館，這個充滿異國情調的城市，擁有眾多令人難忘的景點。 在這裡，您可以找到關於函館山、五稜郭、朝市、金森倉庫群、教堂群等所有熱門景點的資訊，為您的函館之旅做足準備。

**(Translation: Hakodate, this city full of exotic charm, has numerous unforgettable attractions. Here, you can find information about all the popular attractions like Hakodate Mountain, Goryokaku Fort, the morning market, the Kanemori Red Brick Warehouses, and the churches, to prepare for your Hakodate journey.)**

**Option 3: Focusing on Practicality**

> 想要規劃一趟完美的函館之旅？ 這裡彙整了所有函館景點，包含交通方式、開放時間、門票資訊、以及景點特色介紹。 快速瀏覽，讓您輕鬆排進行程。

**(Translation: Want to plan a perfect trip to Hakodate? This collects all the Hakodate attractions, including transportation, opening hours, ticket information, and introductions to the features of the attractions. Browse quickly, and easily schedule your itinerary.)**

**Option 4: Embracing Recommendation**

> 這裡分享了我們精選的函館景點，涵蓋了必看的地標，以及一些值得探索的隱藏寶。 從夜景到歷史遺跡，再到美食，幫助您打造獨一無二的函館體驗。

**(Translation: Here we share our hand-picked Hakodate attractions, covering must-see landmarks, and some hidden gems worth exploring. From night views to historical sites, to food, help you create a unique Hakodate experience.)**

**Which option should you choose?**

* **Consider the context:** Where will this description be displayed? In a simple tag cloud, a longer description would be cumbersome. If it’s in a dedicated tag archive page, a longer, more informative description is ideal.
* **Think about your target audience:** Who are you writing for? Primarily tourists? Or locals?
* **SEO:** Keywords like “函館”, “景點” (obviously), and perhaps specific attractions (函館山, 五稜郭) can boost search engine visibility.

I recommend starting with Option 2 or 3 for a balance of detail and clarity. Then adjust based on your specific needs. Good luck!