Air Carrier Captain reported receiving an altitude alert for their proximity to towers in their flight path while on a visual approach to OMA. Crew elected to go around and returned for landing.

Narrative

While on approach into Omaha airport; we were cleared down to 3000 feet. At that time we were over the last fix on the arrival route. The tower asked if we had the airport in site; at that time both pilots had the airport in sight and we were cleared for the visual approach to runway 14 right. I proceeded to turn towards the final approach fix ZATAR and to descend the final approach fix altitude. This created a problem because there are several large radio towers to the northwest of ZATAR and tower asked us if we had the towers in sight. We replied that we did and continued towards the final approach course at a 90° intercept. During that time; I lost the airport runway environment; and noticed my glideslope; indicating that I was high. I tried to focus too much on my path to the glideslope and where I was at; that situational awareness was degraded. Approach then switched us to tower where we immediately got; from tower; an altitude alert. They asked our intentions and we told them we were performing a go round. A normal go around was performed and radar vectors were given back to runway 14 right and a normal approach was made.