If Cosmos has piqued your interest in the stars, then you need to add one of these incredible observatories to your bucket list. Perched upon mountaintops and even volcanoes, these high-tech towers are perfect for studying the heavens from behind a telescope.
Visit: Free, guided tours are offered on Saturdays at 10 am and 2 pm. There is no charge, but reservations are required.
Click through to see the full slideshow at the Condé Nast Traveler.
Photo: Gabriel Brammer/dpa/Corbis