While some might contend that I've misused the term iconic to describe a number of the featured pictures, I believe anything at which we marvel, for whatever reason(s), epitomizes the word itself. So because I'm currently fixated with northern Europe...
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On the shore of the Baltic Sea in the town of Palanga in western Lithuania.
Shot taken by someone identified as "Andrejavus" and released to the public domain under the terms of the GNU Free Documentation License.