I first thought of one of my favourite pics for this prompt, but have used that already for something else. Still, have it again because it fits so well:
Looking up at one of the pillars of the Romanesque Cathedral of Speyer. The capital you see is not its end, just marks the lower part about half way up.
This one is the base of a column, reaching down to the crypt because the none-too-firm underground made it necessary:
St. Michael's Chuch, Hamburg, the famous town landmark "Michel"
And also in Hamburg in the Botanical Gardens, naturally grown colums: