Singer Lee Hyori and Lee Sang-soon spent a sweet time admiring the picturesque landscape of Switzerland. The Swiss Government Tourism Agency has officially invited Lee Hyori and Lee Sang-soon to the annual World Ath Fair, 'Art Basel' 2023, in Basel, a cultural and artistic city representing northern Switzerland. 'Ath Basel', which will be held from the 15th to the 18th of this month, has a worldwide reputation as a meeting place for the international art world connecting the world's best galleries and supporters since the 1970s. This year, more than 284 world-class galleries will gather to showcase the works of more than 4,000 artists. Lee Hyori and Lee Sang-soon will participate in the pre-event, which will be held between 13th and 14th, before the official event of 'Ath Basel'. Prior to attending the event, they entered Zurich and began a full-scale Summertime at the central City of Lucerne (Luzern) and Mount Chris Riggi (Mt.Rigi) in Switzerland. In addition, Lee Hyori and Lee Sang-soon enjoyed hiking on the Lucerne cruise ship and the Chris Riggi mountain train, climbing Mount Chris Riggi, known as the "Queen of the Mountains," overlooking the sunny lake. The Swisserland locals who met in the middle and the cows grazing in the fields also welcomed the couple from Korea. On this evening, those who dressed up in the Lucerne lakeside town of Vitznau, swam in the cool Lucerne lake, cooled off the heat, enjoyed dinner at restaurants around the lakeside, and melted into the weekend scenery of the Swissland locals. At this Summertime, Lee Hyori and Lee Sang-soon attracted more attention by using public transport in Switzerland, such as trains, cruise ships and buses, which is said to be one of the most environmentally friendly travel laws actively introduced by the Swiss Tourism Agency. Meanwhile, Lee Hyori and Lee Sang-soon tied the knot in 2013, with Lee currently appearing on tvN's 'dance Singer a wandering party'.