Annapurna is the 10th highest mountain in the world and was the first 8000m peak to be climbed. Annapurna would translate into “The Goddess rich in Sustenance” or simply “The Provider”.It is located east of a great gorge cut through the Himalaya by the Kali Gandaki river. The mountain has glaciers on its western and north-western slopes which drain into this gorge. It was first summited in 1950 by Maurice Herzog and Louis Lachenal. It was not until 1970 that Annapurna was summited again. In the autumn of 1999 there were 120 expeditions to Annapurna. 106 climbers reached the summit. 54 climbers never came back.
However, I am assuming you are more interested in trekking the Annapurna region, so most of this information will pertain to trekkers considering this trip.
Day 01: Arrival Kathmandu . Transfer to your hotel. .
Day 02: Kathmandu . Briefing
Day 03: Kathmandu .
Day 04: Drive to Beni (823m).
Day 05: Tatopani (1189m).
Day 06: Ghasa (2012m).
Day 07: Lete (2438m). Rest and change porters.
Day 08: Thulo Bugin.
Day 09: Thulo Bugin pass.
Day 10: Mristi Khola.
Day 11: Base Camp .
Day 12-47: Climbing period.
Day 48: Base camp
Day 49: Thulo Bugin.
Day 50: Lete.
Day 51: Marpha
Day 52: Jomsom.
Day 53: Fly Jomsom / Pokhara / Kathmandu .
Day 54: Kathmandu , reserved day.
Day 55: Departure from Kathmandu .