The artist David Nash planted a circle of trees in 1977.

One of the few surviving street funiculars in the world.

A spherical "micro-nation" in the heart of Vienna.

The topiary maze at the Habsburg hunting lodge.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

A Hungarian optometrist's charming collection of Asian art and curiosities.

Come stay at a live-in art installation.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

The train engine is tucked under an apartment building on a quiet Tokyo street.

Hanging over one of Japan's "hidden valleys," these vine bridges must be remade every three years.