CC Madhya 16.281, Purport, by Srila Prabhupada:

Sri Caitanya Mahaprabhu personally renovated Vrndavana-dhama and advised His chief disciples, Rupa and Sanatana, to develop it and open it to attract the spiritual vision of the general populace. At present there are about five thousand temples in Vrndavana, and still our society, the International Society for Krishna Consciousness, is constructing a huge, magnificent temple for the worship of Lord Krsna and Lord Balarama, along with Radha-Krsna and Guru-Gauranga. Since there is no prominent Krsna-Balarama temple in Vrndavana, we are attempting to construct one so that people will be attracted to Krsna-Balarama, or Nitai-Gauracandra. Vrajendra-nandana yei, saci suta haila sei. Narottama dasa Thakura says that Balarama and the son of Maharaja Nanda have advented Themselves as Gaura-Nitai. To propagate this fundamental principle, we are establishing a Krsna-Balarama temple to broadcast to the world that worship of Gaura-Nitai is the same as worship of Krsna-Balarama.