na_photographs:
Ancient sextant (1735)
na_photographs:
Cologne underground: 2000 years old Roman sewer (which also served as bunker in World War II)
na_photographs:
Old castle's door
na_photographs:
Ulm Minster (with 161,53 meters tallest church tower in the world)
na_photographs:
Shoes over street
na_photographs:
Paris Métro entrance
na_photographs:
Ancient globe
na_photographs:
Astronomical instrument
na_photographs:
Flying machine of the Tailor of Ulm
na_photographs:
Political advertisement
na_photographs:
Time
na_photographs:
Former German chancellor Konrad Adenauer's telephones
na_photographs:
Medieval castle Burg Eltz (Germany)
na_photographs:
Yenidze
na_photographs:
Dresden: Fürstenzug - Procession of Princes
na_photographs:
Rider in the sky
na_photographs:
Reaching out for the sky
na_photographs:
When the saints go marching in
na_photographs:
Dresden sunset
na_photographs:
Wooden typewriter
na_photographs:
The mystery of the Last Supper
na_photographs:
Roman glass sculptures
na_photographs:
New York City 1991
na_photographs:
Roman sculpture (2nd or 3rd century)
na_photographs:
Amphora in an amphora
na_photographs:
Floor mosaic in Cologne Cathedral
na_photographs:
Cologne Cathedral entrance
na_photographs:
New York City 1991
na_photographs:
Berlin: Checkpoint Charlie
na_photographs:
Berlin: Checkpoint Charlie