In 1900, German chocolate company Hildebrands produced a series of postcards imagining the wonders of life in the year 2000.
The optimistic renderings envisioned people in Victorian fashions enjoying lives of boundless leisure and comfort enabled by a century of technological advancement.
The predicted innovations range from accurate (live broadcasts of plays) to absurd (cities covered by weather-proof glass roofs) to depressingly plausible in the near future (summer holidays at the North Pole).

Movable sidewalks.

Moving an entire city block by rail.

Strolling on a lake with the aid of balloons.

A live audiovisual broadcast of a theatre performance.

Weather-controlling machines.

A hybrid railship.

Tourist submarines.

Personal airships.

Tourism at the North Pole.

X-ray surveillance device.

Weather-proof city roofing.