Valparai is a hill station located in the Coimbatore District of Tamil Nadu.The pollution free heavenly land, Valparai is located above 3,500 feet from the sea level on the Anamalai mountain range. It is a hill station where the man made tea and coffee plantations co-exists with the dense forests, wild waterfalls and whispering streams.Valparai is different from other tourist spots unlike ooty, munnar, kodaikanal etc because of some if its unique nature. Ecotourism is given more importance than regular form of tourism. Valparai is the only hill station in the world which has 12 dams and hydroelectric power stations. The best time to visit Valparai is between the months of September to March, when the weather is pleasant. Best Season / Best Time to Visit Valparai would be january,february,march,september, october,november,december. There are many sightseeing options in and around Valparai apart from Chinnakallar falls. The most famous pilgrim center in the area is Balaji Temple. Nirar dam, Ganapati Temple and Annai Velankanni Church are a few other attractions you can explore. The scenic beauty of Sholayar Dam, Grass Hills and Viewpoints, make them must see attractions for any tourist who plans a trip to Valparai.
I live is Delhi so I think I am qualified to answer this Question. The answer from @kirti agarwal is correct that Chandni Chowk metro station is the nearest metro station to Old Delhi Railway Station but the DISTANCE is not 2 km. The Old Delhi railway station is just few minutes away from the metro station. All you need to do is just exit from gate number 3 and you will reach the station is just couple of minutes. Source :
Delhi Metro has really made our lives convenient and hassle free. The Airport express line is the best way to reach NDLS from IGIA. Airport express line connects Dwarka sector 21 to New Delhi metro station. You can take this metro from Terminal 3(IGIA) and get down at last station that is New Delhi metro station. From there NDLS is at the walking distance. Also, you can get this metro from Terminal 2 at the aerocity metro station where the connectivity is through a feeder bus service. 
Goa is one of the most visited tourist destination in India with so many beautiful beaches. The weather of the place is pleasant throughout the year but the peak season when the tourist is high in Goa is from October to January. As it is the peak season so obviously the prices of hotels and other things are also high. But the beauty of the place is best to see during the month of June to September and this time is also the most affordable one unlike peak seasons and party seasons. During the monsoon season so many parties are held in Goa to welcome the pleasant rains. You can enjoy fully and enjoy the lush greenery of the place.  But if you want to enjoy the most famous sunburn festival then visit Goa in the month of December. The prices to visit Goa during December is maximum due to the famous new year celebrations that take place in the month of December. Avoid visiting Goa from March to May because during this time the sea becomes rough and weather becomes humid though the prices are slashed down during this time.