Eggental Tourismus You can visit the observatory "Max Valier" during a public guided tour. Eggental Tourismus - Alex Filz There is also a large observation terrace. Eggental Tourismus - Alex Filz The seven kilometer long planetary path through the landscape of the Eggental, brings you closer to our solar system. Eggental Tourismus - Alex Filz The observatory has a six-meter dome.