This is a file from the Wikimedia Commons and may be used by other projects. Information from its description page there is shown below. Commons is a freely licensed media file repository.
Summary
DescriptionUSA-MO - Mark Twain Memorial Hannibal 002.jpg
Deutsch: Mark Twain Memorial Leuchtturm in Hannibal (Missouri)
English: Mark Twain Memorial Lighthouse in Hannibal (Missouri)
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.