The Moscow Kremlin and St Petersburg Hermitage are among the Unesco-listed attractions which had their comments targeted.
Tripadvisor recently celebrated the milestone of passing 1 billion reviews in February, as the world's largest travel reviews network for restaurants and hotels, with a large user base in Russia.
This made the website a rich target for 'hacktivists' wishing to protest the invasion of Ukraine. Over the weekend social media platforms such as Twitter reported that their services were being restricted in Russia and the Ukraine, leading many to spill over into the comments sections of other websites.
A spokesperson for Tripadvisor said that they were "shocked and saddened by the heart-breaking scenes we are all witnessing in Ukraine, and our thoughts are with every victim of this invasion."
However, the website was "first and foremost a travel guidance platform" and the influx of bogus reviews were a challenge to travellers who rely on reviews.
On Thursday the website announced that the Tripadvisor Foundation will match all donations to World Central Kitchen's Ukraine relief response, up to US$250,000.
Tripadvisor isn't the only travel website which has found its comment section increasingly politicised.
On Tuesday, Google confirmed that it had begun temporarily blocking user-generated reviews of Russian, Ukrainian and Belarusian locations left on Google Maps.
The platform was also "temporarily blocking new reviews, photos, and videos" from the area, a Google Maps spokesperson told the Herald.