He has been working with 'Les Oreades' Gallery since 2000.
1996-1997 Youth Exhibitions in the Art Gallery in Kuznetski Most in Moscow.
1997-1998 The Monumental Painting Exhibition in Moscow.
1998 Academician N.I. Andronov and his Students Exhibition in the Central House of Artists in Moscow.
1998 The Contest exhibition “Peter the Great in Great Britain”; as one of the winners was awarded a trip to Great Britain.
1999 One man exhibition at Les Oreades Gallery in the Central House of Artists.
2000 The second one man exhibition in the Les Oreades Gallery.
2000 Participation in the Group Exhibition in the 20-th Century Art Department of the Abramtsevo Museum.
2001 One man exhibition at the Gallery in Hong Kong.
2001 An exhibition together with N. Khokhlova-Lantseva in Dresden, Germany.
2001 Participation in the "Arte - 2001" Exhibition in Basel, Switzerland.
2002 Participation in the Monumental Painting Exhibition in the Central House of Artists in Moscow.
2002 One man exhibition at the Le Vall Gallery in Novosibirsk.
2002 Participation in the annual exhibition "A Summer in Les Oreades", the Central House of Artists, Moscow.
2002 Solo exhibition at the Les Oreades Gallery.
2003 An exhibition, common project together with A. Borodin: drawings, paintings and photography, Gallery, Moscow.
2003-04 Monumental wall-painting (murals) works in Anadyr, Tchukotka.
2004 One man exhibition at the Gallery, Moscow.
2004 Participation in the annual exhibition "A Summer in Les Oreades".
2005 Participation in the Europe Art 2005. Exhibition at Galerea D’ Art Victoria Dessaules, Geneva, Switzerland.
2005 Participation in the Montreux Jazz Festival 2005. Exhibition, Montreux, Switzerland.
2006-One man exhibition at the Galerie Ncadrement, Ronq, France.
2006 One man exhibition at the Embassy of Iceland in Moscow.
2008 "Summer in Oreades" CHA, Les Oreades Gallery
Lantsev's works can be found in private collections in Russia and abroad and hanging in the offices of Russian and international firms:
The National Bank of Iceland, Deutsche Bank (Germany), Krasbank (Russia), Standard & Poor`s, Raiffeisen Bank, Clifford Chans, Novosibirsk Art museum, 20-th Century, Art collection Abramtsevo museum, Mstislav Rostropovich and Galina Vishnevskaya collection, private collections in France, Hong Kong, Great Britain, the USA, Germany, Israel, Switzerland and Russia.