Traditionally found in formal gardens, obelisks are fancy plant supports that have four sides and a pyramid-shaped top. In ancient times, obelisks were impressive structures made of stone.

But, the world's tallest three-sided obelisk has been saved, according to this year's Heritage at Risk Register. The Wellington monument, in Somerset, has been saved by repair work. Blake's grade ...

Described as the "world's tallest three-sided obelisk", it was built as a tribute to the Duke of Wellington. The trust said: "We know how passionate people are about the monument, so the ...