Lakshmi is the Hindu goddess of wealth, fortune, and prosperity (both material and spiritual).Lakshmi is also called Sri or Thirumagal because she is endowed with six auspicious and divine strength even to Vishnu
सर्वलोकस्य जननीं सर्वसौख्यप्रदायिनीम |
सर्वदेवमयीमीशां देवीमावाहयाम्यहम् ||
ॐ तां म आवह जातवेदो लक्ष्मीमनपगामिनीम् | यस्यां हिरण्यं विन्देयं गामश्वं पुरुषानहम् ||
As all know Laxmi ji is Goddess of wealth and prosperity.. Without Laxmi ji blessing one can not live happily in this physical world..
some famous Lakshmi Devi temples in India are :
Lakshmi Narayan Temple (Birla Mandir), Delhi
Sripuram Golden Temple, Vellore
Mahalakshmi Temple, Kolhapur Maharashtra.
Ashtalakshmi Temple, Chennai
Lakshmi Devi Temple, Hassan Karnataka.
Mahalakshmi Temple, Mumbai
it is believed that goddess Lakshmi visits the houses of devotees on the 3rd day of Diwali festival. Hence, the houses are cleaned, lamps are lit in front of the houses to invite Devi Maa.