Sirijonga Yuma Mangheem, built in the year 1983, is a look alike structural design to that of the Sirijonga Yuma Mangheem of Martam in West Bengal. This beautiful building is trapped amidst serene nature, the view of the mighty mountains obstructed by the fair clouds; immense greenery absorbing the chill for summer; and the precious river flowing in full liberty make this place a must visit during anytime of the year. Though it has gained popularity among tourists especially because of its elaborate celebration of Maghey Sankranti festival during the month of January every year. During this time, the flood of tourists and the localites gather here and take part in the diverse activities and jollification for the welcoming of the pleasant and warmer part of the year. It is a festival of Nepalese, celebrated on the first day of the tenth month of every year according to the Bikram Sambat calendar.
Near to this place is Rong Lungten Lee, an imitation of a customary house of the Lepcha sect at Namprikdang that offers the exhibits of the object from olden times. To enjoy the majestic view of the great peaks of Mt. Khangchendzonga and Mt. Siniolchu, the Singhik View Point can be visited which is just 4 km from Mangan. The short treks to the Singhik Monastery, Jhandi viewpoint and Tosha Lake trek in the adjoining hills, is like cherry on the cake for the adventure enthusiasts. The tourists can also have the glimpses of the cultural lives of the Sikkim people by visiting the scenically gifted Dzongu and Tingchimvillages which is just 20 km away from Sirijonga Yuma Mangheem.
From Gangtok, there are many shared taxis available to reach Mangan, which is just a matter of 52 km. You can also rent a cab all for yourself if you wish to explore the beautiful destinations on the way.
The pleasant weather during the summer months from March to May are considered to be the best time to visit this places. But January is the month when the energy of this place is beyond words because of the spectacular celebration of the Maghey Sankranti festival, the tourists from all over the places come to witness this and equally take part in the merrymaking with the locals.