Berlin's beloved bear is immortalized at the Museum für Naturkunde.

A surreal museum of extraordinary industrial objects.

A slice of central Asia in the middle of Berlin.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

The most visited, and possibly most controversial, museum in Germany.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

The oldest botanical garden in the world that technically isn't the oldest.

The world's oldest surviving anatomical theater, where "the dead are pleased to help the living."

Artist Diego Morlin's war between the natural and human worlds is a wanderer's delight.

A sudden, striking cluster of hills south of Padua has been attracting visitors for centuries.

This Italian foot path winds through the mountains via 52 individual tunnels.

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

Pilgrimage site for star-crossed lovers.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The history of radiation is on safe display at the foot of a radiation science laboratory.

This Paris art space celebrates the creativity and ingenuity that springs from abject poverty, especially in Africa.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.