Tiruvandhipuram is at a distance of 36 km from Pondicherry. It is a very special temple. Its small but very powerful. If you happen to visit the temple on any wedding dates, you wouldnt have a place to stand. The number of marriages happen in this temple is huge. If your children have marriage obstacles, pray to lord devanatha swamy here. There is also a hyagriva shrine on a small hill. Its one of the 108 divya desham. If just in case you had made prayers to do offerings in Tirupathi and couldnt go to Tirupathi, you can very well do it in Tiruvandhipuram.
Picture courtesy : Dinamalar
Link to directions to Tiruvandhipuram from Pondy:
https://maps.google.co.in/maps?saddr=Pondicherry&daddr=Thiruvandipuram+temple,+Padrikuppam,+Tamil+Nadu&hl=en&sll=11.834175,79.735805&sspn=0.239922,0.438766&geocode=FVQNtgAd3mzBBCnPz0mOq2FTOjFOsPDSJtNrzA%3BFYsZswAdfN-_BCE20O6Et4KhsSkrfbiMD6NUOjE20O6Et4KhsQ&mra=ltm&t=m&z=11