Bill Bostock had this information in Business Insider. Here is an excerpt:

A composite image of a building exterior, bedroom, and pole-dancing area which Alexei Navalny’s Anti-Corruption Foundation said show a palace owned by Vladimir PutinFBK

• • A vast cache of images supposedly showing Putin’s secret palace was published Thursday.
  • The foundation of Putin foe Alexei Navalny was behind the leak, and has spoken about the palace before.
  • The Kremlin previously said the idea that Putin has such a palace is “pure nonsense.”

Allies of imprisoned Russian activist Alexei Navalny published hundreds of photos of what they say is the inside of President Vladimir Putin’s secret palace.

Continue reading here for the pictures.