The major sight seeing points are which I would recommend would be:
1. Nakki Lake: Nakki Lake is virtually in the heart of Mount Abu and is a big attraction for tourists. The lake takes its name from the legend that it was scooped out by a god, using only his nails, or nakh(There is a mythological story behind it). It's a pleasant stroll around the lake - look for the strange rock formations. On the lake there is a dilapidated concrete boat-shaped snack bar. Dont forget to do boating and have an ice cream.....
2.Dilwara Temple: Mount Abu's main attraction and among the finest examples includes two temples in which the art of carving marble reached unsurpassed heights. In the front of the temple stands the ' House of Elephants ', with figures of elephants marching in procession to the temple entrance. The carving is so fine that, in places, the marble becomes almost transparent.. Its the temple worth watching....
3.Guru Shikhar: The peak of Guru Shikhar, the highest point in Rajasthan, lies about 2 miles beyond Achalgarh. It commands a bird eye view of Abu and the surrounding areas. Temples located in this area are the ' Mira temple ' and ' Chaumundi temple.
4.Luna Vashi Temple: It was built in the year 1232 by two brothers. Its carved ornamentation is even richer, denser and more delicate. In some places, the marble carving is so fine. The doorways of the temples are framed by ornate pediments and plasters; the columns are magnificiently carved... worth watching....
Plus there are some 5-6 more points but I would suggest that one should view these with lot of time rather than the other..... rest depends on your choice
