Yes, there are a few. 

### Temples of historical significance

The very famous [Prambanan temple at Java, Indonesia](https://en.wikipedia.org/wiki/Prambanan). This very old temple (and UNESCO world heritage site) from 9th century is dedicated to the trimurti. There are three temples, one for each Brahma, Vishnu and Maheshwara, there. Also, there are separate temples for their vahanas as well. 


[![Image of the temple from Wikipedia][1]][1]

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The main deity at [the Elephanta Caves, Mumbai, India](https://en.wikipedia.org/wiki/Elephanta_Caves) is a large stone sculpture of trimurti. 

> The three heads represent three essential aspects of Shiva: creation, protection, and destruction. The right half-face (west face) shows him holding a lotus bud, depicting the promise of life and creativity. This face is symbolism for Brahma, the creator or Uma or Vamadeva, the feminine side of Shiva and creator. The left half-face (east face) is that of a moustached young man. This is Shiva as the terrifying Aghora or Bhairava, the chaos creator and destroyer. This is also known as Rudra-Shiva, the Destroyer. The central face, benign and meditative Tatpurusha, resembles the preserver Vishnu.

[![enter image description here][2]][2]

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### Temples where worship is still being carried out today


The [Thripaya_Trimurti_Temple at Thrissur, India](https://en.wikipedia.org/wiki/Thripaya_Trimurti_Temple) is another temple dedicated to trimurti. Here, the three deities are worshipped at once, as they are all placed on the same pedestal. 

> Thripaya Trimurti Temple is a Hindu temple in Irinjalakuda, Thrissur in Kerala, India. It is the only temple in the world where the Trimurti sit in one pedestal in one sanctum sanctorum. 

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As [@NogShine](https://hinduism.stackexchange.com/users/5212/sarvabhouma) mentioned in [chat](https://chat.stackexchange.com/transcript/message/42413816#42413816), the [Mithrananthapuram Trimurti Temple at Thiruvananthapuram, Kerala](https://en.wikipedia.org/wiki/Mithrananthapuram_Trimurti_Temple)  is also another place where the trimurti are worshipped together. 


  [1]: https://i.sstatic.net/jZgJi.jpg
  [2]: https://i.sstatic.net/FsNZ4.jpg