The first road from the valley was extended to Leysin, followed by a cog railway in 1897. 

Sick children were sent to Leysin with hope that its sunny alpine climate would restore their health. 

Leysin's first "boom" owes its growth to health care. The first clinic, the Grand Hotel, now the Belle Époque Campus of LAS, was built to serve 120 tuberculosis patients. 

With the arrival of the "Sun Doctor", "Dr. August Rollier, Leysin became famous worldwide. 

Famous Historical figures travelled to Leysin over the course of the 20th century to receive tuberculosis treatment. this included Czar Nicholas II in  1904, and Igor  Stravinsky in 1911.

Igor Stravinsky, a frequent visitor to the Grand Hotel where his wife was a patient, composes the "Rite of Spring".

Out of 5,698 people living in Leysin, 244 were farmers and 3,000 were TB patients from 70 different countries.

Mahatma Gandhi has discussions with patients at Leysin when he visits French author Romain Rolland. 

Newly married, Sigrid and Fred Ott shared a passion for education and a strong international perspective.

Dr. Selman Waksman discovers the medicine that would eventually eradicate Tuberculosis. 

in 1949, Sigrid Ott launched the summer "Yank Campus", the first of the International Ranger Campuses for the children of US military families throughout Europe.  

The First meeting of the Swiss company, Leysin American School SA (LASSA) at the Grand Hotel. The Contract was signed to rent the Savoy building. 

American College of Switzerland was founded to give LAS graduates a chance to continue their studies in Leysin.

On September 18th, LAS opened its doors with 89 students and 12 teachers. 

Steven and Doris Ott assumed leadership roles and developed strategies for recruitment, accreditation and expansion. 

LAS became the first Swiss international boarding school to win accreditation in the European Council of International Schools (ECIS) and the US Middle States Association of Colleges and Schools. 

LAS was the first boarding school in Switzerland to introduce the International Baccalaureate Program. 

LAS was the first school ever to be awarded the International Organization for Standardization ISO 9001 status. 

70% ownership of LAS passed to the Swiss Foundation for Advancement of International Education; management stayed within the founding family.

The Town Council named Fred and Sigrid Ott honorary citizens of Leysin. 
 

LAS opened the doors to the Belle Époque campus, previously the Grand Hotel. 

LAS founder, Sigrid Ott, celebrated her 100th birthday and the new Magic Mountain Athletic Center opened to students.