BERLIN (AP).- Germany’s parliament says it will reopen access for registered visitors to the rooftop terrace and glass copula of the Reichstag building this weekend, after closing it due to security concerns. The popular tourist site, which offers a panoramic view of the city, was closed Nov. 22, days after the Interior Ministry raised the country’s terrorist threat level. Only visitors participating in a registered tour of parliament, as well as those with reservations at a rooftop restaurant will be allowed access to the site starting Saturday, parliament officials said in a Thursday statement. Designed by British architect Lord Norman Foster, the Reichstag cupola has made the German parliament one of the most popular buildings in the city.