Things That Are No Longer There

Austria
150th Anniversary of the Vienna World's Fair
August 23, 2023
The stamp features Rotunde constructed at Prater Park for the Vienna World Fair of 1873. The entire building was destroyed by fire in 1937.

Republic of China
World Fair EXPO '70
March 13, 1970
Set of two, one stamp shows the Republic of China pavilion at the Osaka World Fair, a modern style structure which was dismantled after the event.

Congo Republic

1978

The Seven Wonders of Ancient World, 8v

The Statue of Zeus at Olympia was a giant seated figure, about 12.4 m (41 ft) tall, made by the Greek sculptor Phidias around 435 BC at the sanctuary of Olympia, Greece, and erected in the Temple of Zeus there.

The statue was lost and destroyed before the end of the 6th century AD, with conflicting accounts of the date and circumstances. Details of its form are known only from ancient Greek descriptions and representations on coins and art. (wiki)

France
EXPO OSAKA
April 14, 2025
The France Pavilion at the OSAKA EXPO is designed to be dismantled after the event; its modular and prefabricated elements will be relocated and recycled.

Luxembourg
EXPO OSAKA
May 6, 2025
The Luxembourg Pavilion at EXPO OSAKA is designed for easy disassembly and maximum reuse of its building material.

Hong Kong (China)
Aviation development in Hong Kong
October 21, 2025
The stamp features Kai Tak Airport which was closed in July 1998. Its space was redeveloped for administrative and commercial use.

Been at Kai Tak a few times. The landing approach with the steep banking on final was interesting.

This Brazilian stamp pictures Guairá (Spanish) or Guaíra (Portuguese) Falls, which were located along the Paraná River between Brazil and Portugal. Also known as Sete Quedas (Seven Falls), the falls were a series of seven groups of cataracts that dropped approximately 375 feet in total.

The roar of the rushing water could be heard up to 20 miles away from Guairá Falls, but the completion of Itaipu Dam and subsequent submersion of the area by the artificial Itaipu Lake led to the falls' disappearance in 1982.