New Delhi, May 27 -- A global heritage foundation that works to improve conditions at famous archaeological sites offered on Tuesday to work with Peruvian authorities on the famed Machu Picchu, where tourists often face hours of lines, overcrowding and unreliable local transport.

The announcement by the New7Wonders foundation comes months after it warned last September that a designation of one of the New Seven Wonders of the World - given to Machu Picchu in 2007 - was at risk because of numerous problems visitors face at the site.

Jean Paul De la Fuente, the foundation's director, said he had seen "no progress" at the archaeological site since last year's warning, attributing it to Peru's "political paralysis."

De la Fuente, currently...