2  of  10

After sunset over Sydney Harbor

3  of  10

Dr. Sukhovolskiy with his sons Hugo (left) and Lev (right) at a pumpkin patch

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Dr. Sukhovolskiy with Hugo and Darya

5  of  10

Hugo and Lev enjoying a pumpkin-patch train ride

6  of  10

The family on a pier near their home in Gig Harbor

7  of  10

Soaking up the sun near the ancient Mayan ruins in Tulum, Mexico

8  of  10

In the mountains of Switzerland

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In the mountains of Switzerland

10  of  10

By a neighborhood pond where the family often takes walks