One of the last remaining railway viaducts equipped with a transporter ferry.

A Nazi concentration camp and Anne Frank's place of death.

Tiny memorials honor individual victims of the Holocaust.

Ample proof that watery ends make for well-preserved, millenia-old mummies.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

A German apartment building hosting as many trees as human occupants.

This historic stone bridge has an entire neighborhood clinging to its sides.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.